UNIT#04 CELL STRUCTURE AND FUNCTION Flashcards

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1
Q

Cell theory is not applicable to;

A

Viruses

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2
Q

What would be the resolving power of the objective length in a microscope, if the eyepiece is of 10X and the total magnification is 40X?

A

400X

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3
Q

The human naked eye can differentiate between two points which are how much apart?

A

1mm

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4
Q

What is the correct sequence of steps in cell fractionation?

A

Separation, Homogenization, Centrifugation

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5
Q

Robert Hooke was the first person to see cells in:

A

Cork

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6
Q

Micrographia is a famous publication of;

A

Robert Hooke

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7
Q

The presence of nucleus was reported by:

A

Robert Brown

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8
Q

Cell theory was finally formulated by:

A

Schleiden and Schwann

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9
Q

The concept “OMNIS cellula-e-cellula” means that new cells are formed from:

A

Pre-existing cells

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10
Q

A cell consists of basic components:

A

➡Plasma membrane
➡Centrioles
➡Nucleas

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11
Q

Which of the ____ cells store surplus food?

A

Parenchymatous

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12
Q

Plant cells are distinguishable from animal cells containing:

A

Cell wall

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13
Q

Out of the given options, choose the one which shows the structures found only in plants:

A

Chloroplast, Microtubules, Peroxisomes

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14
Q

Pick the correct reference to plant cell

A

➡Mitochondria:✅
➡Peroxisome:✅
➡Centrioles:❌

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15
Q

Which features do animal cells share with plant cells?

A

➡Chloroplast:❌
➡Cytoplasm:✅
➡Nucleas:✅
➡Mitochondria:✅

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16
Q

The layers of cellulosic fibres in the cell wall are arranged with each other at:

A

Horizontal angle

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17
Q

Which of the following is related to the prokaryotic cell wall?

A

Sacculus
(polysaccharide chains forming peptidoglycan and muerin. The entire cell wall is sacculus)

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18
Q

It is absent in the secondary cell wall:

A

Pectin
(a component of the primary wall)

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19
Q

In which type of cells, the cell wall not present:

A

Animal cells

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20
Q

Cellulose is usually not found in:

A

Middle Lamella

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21
Q

Holding neighbouring cells together is a function of:

A

Middle Lamella

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22
Q

The cell wall is secreted by the:

A

Protoplasm

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23
Q

Chitin is found in the cell wall of:

A

Fungi

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24
Q

Which is found in the primary wall:

A

Pectin

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25
Q

Which part of cells formed on the inner face of a plant cell at the end:

A

Secondary cell wall

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26
Q

Which is not found in the secondary wall?

A

Pectin

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27
Q

The primary cell wall contains all except:

A

Lignin

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28
Q

Pectin is a polymer of:

A

Galacturonic acid

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29
Q

Cellulose and hemicellulose are found in:

A

➡Primary cell wall
➡Secondary cell wall

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30
Q

_____ hold primary cell walls together

A

Middle lamella

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31
Q

Which component provides the cell wall extra tensile, rigidness and compressional strength

A

Lignin

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32
Q

A cell wall is present only in all organisms except:

A

Viruses

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33
Q

Cellulose is the major component of:

A

Primary wall

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34
Q

The outermost layer in a typical plant cell would be:

A

Primary cell wall

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35
Q

A plant cell wall is mainly composed of which of the following?

A

Cellulose

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36
Q

The first layer of cell wall which is formed is called:

A

Middle Lamella

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37
Q

The secondary cell wall of sclerenchyma is impregnated with:

A

Lignin

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38
Q

The remaining material between adjacent plant cells

A

Middle lamella

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39
Q

Which of the following is a non-living component of a plant cell?

A

Cell wall

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40
Q

The cell wall of fungi contains:

A

Chitin

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41
Q

Components of secondary cell wall:

A

Cellulose, Hemicellulose, Lignin

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42
Q

The cell wall is secreted by:

A

Protoplast

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43
Q

A cell without a cell wall is termed as:

A

Protoplast

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44
Q

The rectangular shape of plant cells is due to;

A

Cell wall

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45
Q

Which has a high affinity for water?

A

Cellulose

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46
Q

All of the following are common molecules in the membrane of all types of cells except:

A

Traces of carbohydrates

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47
Q

The hydrophobic portion of the plasma membrane of all types of cells except:

A

The inner core of the plasma membrane

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48
Q

Which of the following describes the fluid mosaic model of plasma membrane structure?

A

Phospholipid bilayer with embedded proteins

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49
Q

In the plasma membrane, carbohydrates combine with the lipids and proteins to form glycolipids and glycoproteins and are oriented:

A

Towards outside
(act as a receptor)

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50
Q

Which of the following is not a characteristic feature of the animal cell membrane?

A

Prevent osmotic lysis

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51
Q

Which of the following acts as a receptor site on the plasma membrane?

A

Glycoprotein

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52
Q

Which structure is the most important or cellular life?

A

Cell membrane
(responsible for identity and integrity)

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53
Q

The intake of liquid materials across the cell membrane is:

A

Pinocytosis

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54
Q

The hydrophobic region of these molecules helps to prevent ion or polar molecules from passing through the cell membrane.?

A

Phospholipids

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55
Q

The fluid mosaic model of plasma membrane states that protein molecules float in a fluid-like _____ layer.

A

Phospholipid

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56
Q

The rapid exchange of materials through carrier proteins across the plasma membrane is called:

A

Facilitated Diffusion
(the process of transporting molecules via protein)

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57
Q

The basic structure of plasma membrane is provided by:

A

Phospholipids

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58
Q

Taking in of solid particle by the cell is called:

A

Phagocytosis

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59
Q

The self-eating ability of lysosome is called:

A

Autophagy

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60
Q

Passive processes for the movement of molecules across cell surface membrane are:

A

Facilitated Diffusion and Osmosis

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61
Q

The fluid mosaic model of the cell membrane is:

A

In which protein molecules are free to move about the fluid bilayer of phospholipid molecules

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62
Q

Cell permeability and transport processes of cell membrane depend upon its:

A

Phospholipid

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63
Q

According to the fluid mosaic model of the cell membrane, which zone is embedded inside?

A

Hydrophobic

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64
Q

Which of the following is not the function of the cell membrane?

A

Protein Synthesis

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65
Q

When a plant cell receives a signal for death, it commits suicide by rupturing:

A

Cell membrane

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66
Q

An enzyme that is attached to the cell membrane of the cell:

A

Adenylate cyclase
(synthesize cyclic AMP)

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67
Q

Which of the following is not associated with both prokaryotic and eukaryotic cell membrane?

A

DNA replication

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68
Q

The plasma membrane is found in the cells of:

A

➡Animals only
➡Plants only
➡Bacteria only

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69
Q

Cell membranes are composed of:

A

Lipids and Proteins

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70
Q

The cell membrane has 60-80%:

A

Proteins

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71
Q

The cell membrane has ____ thickness:

A

7nm

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72
Q

The cell membrane is:

A

Asymmetrical

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73
Q

Fluidity of cell membrane is due to:

A

Lipids

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74
Q

Fluidity of the membrane depends on its lipid components including:

A

➡Phospholipids
➡Glycolipids
➡Cholesterol

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75
Q

Which technique provided the primary evidence for the fluid mosaic model of the cell membrane

A

➡Chemical analysis
➡Microscopic staining

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76
Q

Which component act as a thermal stabilizer to maintain membrane fluid nature at variable temperature

A

Cholesterol

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77
Q

The mosaic nature of cell membrane is due to:

A

Proteins

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78
Q

Which class of carbohydrates are usually found in cell membrane:

A

Oligosaccharide

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79
Q

All functions are collectively performed by both lipids and proteins except:

A

Protective Function

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80
Q

Which molecules pass with great difficulty:

A

Ions as charged particles

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81
Q

CD4 receptors on T-lymphocytes are _____ in nature

A

Glycoproteins

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82
Q

Which will require no expenditure of energy:

A

Osmosis

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83
Q

In many animal cells, the cell membrane helps to take in materials by infolding them in the form of vacuoles. This type of intake is termed as:

A

Endocytosis

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84
Q

Endocytosis which involves ingestion of solid material is:

A

Phagocytosis

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85
Q

By which of the following can movements of materials across animal cell membranes be accomplished?

A

➡Active transport only
➡Diffusion only
➡Pinocytosis only

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86
Q

The structure of plasma membrane is mainly held together by:

A

➡Proteins
➡Phospholipids
➡Carbohydrates

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87
Q

Ions cannot cross which part of the plasma membrane?

A

Phospholipid bilayer

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88
Q

Damage to one of the following immediately kills the cell whether it is prokaryotic or eukaryotic?

A

Cell membrane

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89
Q

What part of the cell serves as an intracellular highway?

A

Cell membrane

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90
Q

Glycolipids in the plasma membrane are located at?

A

The outer leaflet of the plasma membrane

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91
Q

Which statement is true about the lipid bilayer of the plasma membrane?

A

➡Permeable to a large ionic polar molecule
➡Permeable to a small ionic molecule
➡Permeable to an only polar molecule
✅None of the above

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92
Q

Peripheral parts of the cell are often like:

A

Gel

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93
Q

It is false about the cytoplasm of eukaryotic cells:

A

Transcription

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94
Q

All of the following organelles contain DNA except:

A

Ribosomes

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95
Q

The 40S is the smaller ribosomal subunit, associated with:

A

Yeast

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96
Q

Identify non-membranous organelle from the following:

A

Ribosome

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97
Q

Ribosomes are tiny organelles, which are involved in the synthesis of:

A

Protein

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98
Q

Which one of the following organelle is found in both prokaryotic and eukaryotic cells?

A

Ribosome

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99
Q

Ribosomes present in prokaryotes are:

A

The 70S

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100
Q

The Group of ribosomes attached to mRNA is called:

A

Polysome

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101
Q

Which of the following organelle consist of two sub-units

A

Ribosome

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102
Q

The site of protein synthesis in cell is:

A

Ribosome

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103
Q

Ribosomes are made up of _____ and _____.

A

RNA and proteins

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104
Q

The cytoplasmic organelle commonly found in both prokaryotes and eukaryotes is:

A

Ribosome

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105
Q

The 70S-sized ribosomes are found in the cells of:

A

Bacteria

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106
Q

Select the organelle which is only present in animal cells?

A

Centrioles

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107
Q

Which of the following structures is present in both plant and animal cells but absent in prokaryotic cells?

A

Microtubule

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108
Q

Glycolysis is the common stage n both aerobic and anaerobic respiration and it occurs in ____ of the cell.

A

Cytoplasm

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109
Q

Which of the following is true about cytoplasm?

A

It is the region between the nucleus and cell membrane

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110
Q

The living substance of living beings is called:

A

Protoplasm

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111
Q

The plasma membrane and everything present is:

A

Protoplast

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112
Q

The soluble part of the cytoplasm is termed as:

A

Cytosol

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113
Q

Cyclosis and amoeboid movements are because of:

A

Microfilaments

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114
Q

Ribosomes combined with mRNA are called:

A

Polysome

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115
Q

Ribonucleoprotein particles are the same:

A

Eukaryotic Ribosomes

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116
Q

If 3 ribosomes attach to a single mRNA at different points then how many similar proteins will form:

A

1

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117
Q

What is the approximate ratio of RNA and protein in a ribosome?

A

1:1

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118
Q

Ribosomes are chemically composed of which the following?

A

➡Protein
➡RNA

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119
Q

It helps in the attachment of two ribosomal subunits:

A

Magnesium ion

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120
Q

Which of the following organelles is not bound by a membrane?

A

Ribosomes

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121
Q

The 60S and 40S sub-unit combine to form what size particle?

A

The 80S

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122
Q

Which of the following is synthesized by free-floating ribosomes of cytoplasm in humans?

A

DNA polymerase

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123
Q

The soluble part of the cytoplasm is known as the?

A

Cytosol

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124
Q

Enzymes that are an integral part of ribosomes are involved in the synthesis of which of the following molecules?

A

Proteins

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125
Q

The nucleolus is visible in:

A

Interphase

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126
Q

Which of the following organelle have a continuous connection with the nuclear membrane?

A

RER

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127
Q

It precisely describes the function of nucleoli:

A

Formation of ribosomes

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128
Q

rRNA is actively synthesized in:

A

Nucleolus

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129
Q

How many nuclear pores are present in a typical differentiated cell, such as RBC?

A

About 3-4 per nucleus

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130
Q

Ribosomal RNA is synthesized in:

A

Nucleolus

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131
Q

The structure present in a eukaryotic cell but absent in prokaryotic cells is:

A

Nucleus

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132
Q

It makes nucleoli during interphase:

A

Secondary constriction

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133
Q

In a generalized plant cell the nucleus is:

A

Displaced to the site of the cell

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134
Q

Generally, the cells with more than two nuclei are called:

A

Multinucleate

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135
Q

Ribosomal RNA (rRNA) is synthesized and stored in

A

Nucleolus

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136
Q

New ribosomes are assembled in (one or few darkly stained visible bodies within the nucleus are called);

A

Nucleolus

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137
Q

Which of the following statements about the nuclear envelope is NOT true?

A

its inner membrane bears ribosome

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138
Q

Erythrocytes have pores per nucleus:

A

3 or 4

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139
Q

The nucleus contains (A chromosome is composed of):

A

DNA

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140
Q

Chromosomes are stained with:

A

Acetoarcin

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141
Q

Nucleolus appears and disappears during

A

Interphase and Cell division

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142
Q

The centromere is also called:

A

Primary constriction

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143
Q

Each centromere had two plaques of protein

A

Kinetochore

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144
Q

A nuclear organizer is also referred to (Satellite containing junk DNA is closer to)

A

Secondary constriction

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145
Q

The terminal end of chromosomes that avoids mixing of chromosomes is called:

A

Telomere

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146
Q

Some part of chromatin that is densely stained is called:

A

Heterochromatin

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147
Q

The number of chromosomes in the fruit fly, Drosophila melanogaster

A

8

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148
Q

Germ cells of Drosophila have chromosomes

A

4

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149
Q

_____ is the heaviest particulate of the cell

A

Nucleus

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150
Q

Which of the following cells do not possess a nucleus?

A

➡Sevie tube cells
➡Bacteria
➡Red Blood cells

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151
Q

An animal has 80 chromosomes in its gametes, how many chromosomes will be seen in the animal’s muscle cells?

A

160`

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152
Q

The number of nuclear pores is highly variable in eukaryotic cells because?

A

Size of the nucleus

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153
Q

Which statement about the nucleolus is not true?

A

Hereditary centre

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154
Q

If an organism has a diploid number of 36, what is its haploid number?

A

18

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155
Q

The 23rd pair of chromosomes in man is:

A

Heteromorphic

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156
Q

Which of the following cell structure contains the highest concentration of RNA?

A

Nucleolus

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157
Q

All chromosomes other than sex chromosomes are called:

A

Autosomes

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158
Q

Somatic cells of humans have how many pairs of chromosomes in total?

A

23

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159
Q

____ is responsible for making ribosomal RNA (rRNA)

A

Nucleolus only

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160
Q

The soluble sap of the nucleus in a plant cell is called:

A

Nucleoplasm

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161
Q

Factory of ribosomal synthesis of:

A

Nucleolus

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162
Q

Double membranous organelle having pores

A

Nucleus

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163
Q

Which of the following best describes the function of RER in eukaryotic cells?

A

Synthesis of proteins

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164
Q

Which of the following statement is incorrect regarding the endoplasmic reticulum?

A

RER is more abundant than SER in adipose tissue

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165
Q

A function that is not related to smooth endoplasmic reticulum:

A

Enzyme synthesis

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166
Q

Which o the following organelle is associated with the single membrane?

A

Endoplasmic Reticulum

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167
Q

Which of the following function is performed by both types of endoplasmic reticulum?

A

Mechanical Support

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168
Q

Which of the following organelle is responsible for the production of steroid hormones?

A

Smooth Endoplasmic Reticulum

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169
Q

Which one of the following cell structures are involved in the synthesis of lipids?

A

Endoplasmic Reticulum

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170
Q

The organelle involved in the detoxification of drugs and poisons in liver cells:

A

Smooth Endoplasmic Reticulum

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171
Q

The nuclear membrane is continuous with:

A

Endoplasmic Reticulum

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172
Q

Which of the following is correctly matched?

A

SER: Converts cholesterol into Vitamin D in the skin

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173
Q

Lipid Synthesis or lipid metabolism is the function of:

A

Smooth Endoplasmic Reticulum

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174
Q

The Smooth Endoplasmic Reticulum is responsible for the metabolism of:

A

Lipids

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175
Q

Select the one which is not a function of smooth endoplasmic reticulum (SER):

A

Processing of glycoproteins

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176
Q

Which of the following is not a product of ER in animal cells?

A

ATP synthase

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177
Q

The semi-circular channels and system of tubes found in the cytoplasm are known as:

A

Endoplasmic Reticulum

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178
Q

Endoplasmic Reticulum contains a system of flattened membrane-bounded sacs which are named as;

A

Cisternae

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179
Q

Lipids synthesis/ metabolism takes place in which of the following organelle?

A

Smooth Endoplasmic Reticulum

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180
Q

Which cell organelle is responsible for the transmission of impulses and detoxification of harmful drugs?

A

Smooth Endoplasmic Reticulum

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181
Q

Which of the following is not a function of Smooth Endoplasmic Reticulum (SER)?

A

Synthesis of membrane proteins

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182
Q

Which of the following is a mesh of interconnected membranes involved in protein synthesis and transport?

A

Endoplasmic Reticulum

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183
Q

Which of the following is false about the sarcoplasmic reticulum?

A

The sarcoplasmic reticulum is found only in voluntary muscle cells

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184
Q

Does cytoplasmic streaming movement cause flow of all of the following except?

A

Rough Endoplasmic Reticulum

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185
Q

Which one of the following is involved in lipid metabolism?

A

➡Rough Endoplasmic Reticulum
➡Golgi apparatus
➡Chloroplast
✅None of the above

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186
Q

Sarcoplasm is different from cytoplasm:

A

➡It contains sarcoplasmic reticulum
➡It contains glycogen
➡It contains glycogen and oxygen-binding protein, myoglobin

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187
Q

______ are storage bodies for intracellular calcium.

A

Smooth Endoplasmic Reticulum

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188
Q

The Smooth Endoplasmic Reticulum is not involved in:

A

Conversion of mRNA to amino acids

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189
Q

Which of the following is not the function of the endoplasmic reticulum?

A

Synthesis of conjugated molecules

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190
Q

The function of the Smooth Endoplasmic Reticulum (SER) is ____.

A

Synthesis of lipids

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191
Q

Spherical or tubular membranes which separate the material present in the endoplasmic reticulum from that of cytoplasmic material are called?

A

Cisternae

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192
Q

Which of the following is not the function of the endoplasmic reticulum?

A

Synthesis of conjugated molecules

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193
Q

Network of tubules continuous with nuclear membrane:

A

Rough Endoplasmic Reticulum

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194
Q

If a radioactive amino acid is given to an organism, the organelle that shows radioactivity the very first time:

A

Rough Endoplasmic Reticulum

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195
Q

Sarcoplasmic reticulum cells are those cells that contain:

A

Smooth Endoplasmic Reticulum more

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196
Q

______ extends from the nucleus and touches cell membarne.

A

➡Smooth Endoplasmic Reticulum
➡Rough Endoplasmic Reticulum

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197
Q

It is not found in the composition of the Endoplasmic Reticulum:

A

DNA

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198
Q

Which of the following is not a function of SER?

A

Synthesis of membrane proteins

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199
Q

Which of the following cell organelle can be viewed with the help of high power light microscope?

A

Mitochondria

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200
Q

It is the correct location of ATP synthase in mitochondria:

A

Inner mitochondrial membrane

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201
Q

Which of the following structure is involved in oxidative phosphorylation?

A

Inner mitochondrial membrane

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202
Q

The Krebs cycle occurs in the ______ of mitochondria.

A

Matrix

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203
Q

Which of the following cell type is more appropriate to study mitochondria?

A

Muscle cell

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204
Q

In Mitochondria, small knob-like structures called F1 particles are found in:

A

Inner Membrane

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205
Q

Which organelle is bounded by two membranes?

A

Mitochondria

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206
Q

The inner membrane of mitochondria forms extensive infoldings called:

A

Cristae

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207
Q

Functionally, mesosomes can be compared with:

A

Mitochondria

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208
Q

The inner membrane of mitochondria forms extensive infoldings called:

A

Cristae

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209
Q

Functionally, mesosomes can be compared with:

A

Mitochondria

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210
Q

Organelle involved in aerobic respiration:

A

Mitochondria

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211
Q

The inner membrane of the mitochondria is called:

A

Cristae

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212
Q

Which organelle is required for aerobic respiration?

A

Mitochondria

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213
Q

The finger-like infoldings formed by the inner membrane of mitochondria are called:

A

Cristae

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214
Q

The structure in the double membrane-bounded organelle, primarily involved in ATP generation through cellular respiration is:

A

F1-particles

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215
Q

R0-F1 particles is another name for:

A

ATP synthase

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216
Q

Cristae are found in:

A

Mitochondria

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217
Q

Infolding of the inner membrane of mitochondria are:

A

Cisternae

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218
Q

Powerhouse machinery is inherited by future offspring by:

A

Sperm of father

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219
Q

The number of mitochondria increases within a cell is:

A

Self-Replication

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220
Q

Which cell will have move mitochondria than the others

A

Pancreatic cell

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221
Q

Oxysomes were discovered by

A

E.Rocker

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222
Q

F1 particles are involved in:

A

ATP synthesis

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223
Q

______ types of RNA are found in Mitochondria

A

3

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224
Q

Which organelle is considered to be organisms within an organism

A

➡Mitochondria
➡Chloroplast

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225
Q

Which of the following reactions does not occur in the mitochondrial matrix

A

Glycolysis

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226
Q

A number of mitochondria are controlled by:

A

Lysosomes

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227
Q

The structures that are involved in the manufacture and supply of energy to the cell are:

A

Mitochondria

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228
Q

ADP is regenerated by mitochondria into which of the following?

A

ATP

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229
Q

Which of the following is not present in mitochondria?

A

Thylakoid

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230
Q

The outer and inner membranes of mitochondria are?

A

Structurally and functionally different

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231
Q

Which o the following is not a character of mitochondria?

A

The number of mitochondria is constant

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232
Q

Inner membrane convulsions of the mitochondria are called?

A

Cristae

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233
Q

Diameter of mitochondria ranges between:

A

0.5-1 μm

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234
Q

It is a true statement:

A

A lot of mitochondria are present in axons

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235
Q

Enzymes in the mitochondrial matrix help in which of the following metabolic processes?

A

➡Krebs cycle
➡Aerobic Respiration
➡Fatty acid metabolism

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236
Q

_____ plays role in respiration.

A

Mitochondria

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237
Q

Which of the following combination is an example of self-replicating organelle?

A

➡Mitochondria
➡Chloroplast

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238
Q

Which of the following is a double membranous organelle?

A

➡Nucleus
➡Mitochondira
➡Chloroplast

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239
Q

F1 particles are present in:

A

Mitochondria

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240
Q

Chlorophyll molecule resembles with:

A

Haem part of haemoglobin

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241
Q

Which of the following statement is incorrect?

A

Inter-granum is photosynthetic

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242
Q

Which statement is correct about mitochondria and chloroplast?

A

70S ribosome is attached to the inner membrane of mitochondria and chloroplast

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243
Q

Identify the correct pair from the following options:

A

Modification - Golgi apparatus

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244
Q

Modification of proteins and lipids into glycoproteins and glycolipids is the function of:

A

Golgi apparatus

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245
Q

Golgi complex is involved in the formation of:

A

Lysosomes

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246
Q

The transport of secretory proteins takes place through organelles in which of the following order?

A

RER➡SER➡Golgi apparatus➡Secretory vesicles

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247
Q

The cisternae break up into vesicles from ____ and ___ of the Golgi complex

A

Concave, Forming face

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248
Q

Which cell organelle is responsible for cell secretion?

A

Golgi body

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249
Q

Which o the following organelles are involved in the synthesis of the plant cell walls?

A

Golgi complex

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250
Q

Which of the following does not originate from the Golgi complex?

A

All originate from the Golgi complex

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251
Q

Phragmoplast is associated with:

A

Golgi complex

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252
Q

Golgi apparatus is concerned with cells:

A

Secretion

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253
Q

Organelle _____ is concerned with cell secretion:

A

Golgi complex

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254
Q

Which of the following modifies proteins and lipids by adding carbohydrates?

A

Golgi apparatus

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255
Q

Another name for Golgi-Complex is;

A

Dictyosome

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256
Q

Which cell organelle lacks nucleic acid?

A

Golgi apparatus

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257
Q

Golgi complex was discovered by which scientist?

A

Camillo Golgi

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258
Q

Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates?

A

Golgi apparatus

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259
Q

Golgi complex is responsible for the formation of secretory granules in _____ cell?

A

Pancreatic

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260
Q

The pancreas produces secretory granules that help in digestion. The see granules after passing through the endoplasmic reticulum are pinched off from the surface of the Golgi apparatus?

A

Maturing face

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261
Q

What shape of the maturing phase of the Golgi apparatus is?

A

Concave

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262
Q

Which organelle forms the cell membrane?

A

Golgi body

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263
Q

Which is incorrectly matched:

A

Golgi apparatus➡Intercellular digestion✅
Cell membrane➡Cell Recognition❌
SER➡Carbohydrate metabolism❌
RER➡Protein synthesis❌

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264
Q

Which of the folllowng organelle is most abundant in those animal cells which exhibit phagocytic activity?

A

Lysosomes

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265
Q

It is a disease characterised by the accumulation of lipids in the brain cells leading to mental retardation and even death:

A

Tay-Sachs disease

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266
Q

Tay-Sachs disease occurs when cells are unable to produce an enzyme leading to the build of certain lipids in the cell. Which cell structure would not function correctly?

A

Lysosomes

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267
Q

These structures are involved in the breakdown of old organelles:

A

Lysosomes

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268
Q

Strictly speaking, autophagosomes are actually:

A

Secondary Lysosome

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269
Q

Suicidal bags are:

A

Lysosomes

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270
Q

Lysosomes were isolated and studied for the first time by (Lysosomes were discovered by):

A

De-Duve

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271
Q

Any foreign object that gains entry inside the cell is immediately engulfed by:

A

Lysosome

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272
Q

A tadpole’s tail is gradually gained entry inside the cell and is immediately engulfed by:

A

Lysosome

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273
Q

The size of lysosomes ranges between:

A

0.2 to 0.5 μm

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274
Q

Lysosomes are ____ organelles.

A

Single membranous

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275
Q

_____ is the self-digestion of a cell by releasing the contents of lysosomes within the cell.

A

Autolysis

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276
Q

Tay-Sachs disease results due to accumulation in brain cells:

A

Lipids

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277
Q

What are autophagosomes?

A

➡Those lysosomes which eat parts of their own cells to generate energy
➡Those lysosomes which eat old and worn-out cellular organelles

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278
Q

Lysosomes are known as “suicidal bags” because of:

A

Hydrolytic activity

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279
Q

Which of the following cell organelle does not contain DNA?

A

Lysosomes

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280
Q

The process of self-digestion of selective nonfunctional organelle by cells through the actions of enzymes originating from the cell is called?

A

Autophagy

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281
Q

Phagocytosis, autophagy and extracellular digestion are the functions of:

A

Lysosomes

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282
Q

A disease caused by the absence of a lysosomal enzyme responsible for lipid catabolism:

A

Tay-Sachs disease

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283
Q

The cells which lack lysosomes would have difficulty in which of the following

A

Digesting food

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284
Q

Lysosomes are formed by:

A

Golgi Complex

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285
Q

Which of the following eukaryotic organelle has a symbiotic origin with bacteria?

A

Chloroplast

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286
Q

Chlorophyll molecule resembles with:

A

Haem part of haemoglobin

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287
Q

Which of the following statement is incorrect?

A

➡CO2 fixation occurs in stroma✅
➡Chloroplasts are self-replicating✅
➡Inter-granum is photosynthetic❌
➡Chloroplasts have 70S ribosomes✅

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288
Q

Which of the following statement is correct about mitochondria and chloroplast?

A

70S ribosome is attached to the inner membrane of mitochondria and chloroplast

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289
Q

Among the followings which cellular organelle contains circular DNA similar to those found in bacteria?

A

Chloroplast

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290
Q

Each chloroplast contains ___ grana

A

40-50

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291
Q

Plastids are present only in:

A

Plant cell and algae

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292
Q

In a plant cell, chlorophyll is present in (In photosynthetic plant cells, membrane-bound structures containing green pigment are called):

A

Chloroplasts

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293
Q

Stroma is fluid in the chloroplast:

A

Matrix

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294
Q

The fluid which surrounds the thylakoids is called:

A

Stroma

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295
Q

Which statement about plastids is true?

A

They contain DNA and ribosome

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296
Q

Proplastids are found in:

A

➡Flowers & Fruits
➡Shoot
➡Root

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297
Q

Etioplast on exposure to sunlight develop into:

A

Chloroplast

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298
Q

Elaioplast store

A

Lipids

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299
Q

Dark reaction/ CO2 fixation takes place in:

A

Stroma

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300
Q

Which part of thylakoids take part in light reaction actively

A

Smaller thylakoid

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301
Q

Which of the following is colourless?

A

Leucoplasts

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302
Q

Leucoplasts are a kind of:

A

Plastids

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303
Q

The type of plastids found in the roots of plants:

A

Leucoplasts

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304
Q

In the plants, 50 or more thylakoids piled upon each other to form?

A

Granum

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305
Q

The dense fluid-filled region in the chloroplast is called:

A

Stroma

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306
Q

Enzymes in Calvin Cycle are found in which cell organelle?

A

Chloroplast

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307
Q

Which type of cell would be the most appropriate for the study of chloroplasts?

A

Photosynthetic cell

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308
Q

Stacked of thylakoids in chloroplasts is called?

A

Grana

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309
Q

Which of the following organelle is involved in the release o oxygen?

A

Chloroplast

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310
Q

The matrix surrounding the grana in the inner membrane of the chloroplast is called?

A

Stroma

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311
Q

Plants store food in;

A

Leucoplast

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312
Q

Double membranous structures having coins like stacks of membranes are known as:

A

Chloroplast

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313
Q

The Yellowing and brown end of the leaf is because o a deficiency of:

A

Chlorophyll

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314
Q

The Colour of the petals is due to:

A

Chromoplast

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315
Q

Enzymes for the light-dependent reaction are present in:

A

Thylakoid membrane of the chloroplast

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316
Q

____ provides support for the individual plant cell and contributes to the turgidity of the leaves and younger parts of plants.

A

Vacuole

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317
Q

What is the specific name given to the biological membrane that surrounds the vacuoles?

A

Tonoplast

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318
Q

The presence of a large central vacuole is the characteristic of:

A

Plants

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319
Q

Which of these is solely present in plant cells only?

A

Central vacuole

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320
Q

The membrane separating the vacuole from the cytoplasm is called:

A

Tonoplast

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321
Q

Which of the following statement is true?

A

Prokaryotic cells evolved before eukaryotic cells

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322
Q

What is the main difference between prokaryotes and eukaryotes?

A

Prokaryotes do not have internal membranes

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323
Q

Prokaryotic and eukaryotic cells generally have which o the following features in common?

A

Presence of ribosomes

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324
Q

The distinguishing feature of a prokaryotic cell is its:

A

Cell Wall
(Composed of peptidoglycan/muerin)

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325
Q

Peptidoglycan or muerin is a special or distinctive feature of the cell wall in:

A

Bacteria

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326
Q

DNA molecule in prokaryotes is:

A

Single, Circular Double stranded molecule not bounded by a membrane

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327
Q

In prokaryotic cell wall strengthening material is:

A

Murein

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328
Q

What combination is found in prokaryotic cells?

A

➡Mitochondria: Absent
➡Ribosomes: Present
➡DNA: Present
➡RNA: Present

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329
Q

Bacteria are :

A

Haploid

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330
Q

Introns are present in ___ only.

A

Eukaryotes

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331
Q

Plasmids that are transferred during conjugation are called

A

Transmissible

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332
Q

Flagella in prokaryotes are made up of protein called:

A

Flagellin

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333
Q

Flagella in eukaryotes are made up of protein called:

A

Tubulin

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334
Q

Structures not found in prokaryotes are:

A

Cytoskeleton

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335
Q

A respiratory activity like Mitochondiria in prokaryotes is performed by:

A

Mesosomes

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336
Q

Glycolacyx is made up of:

A

➡Capsule
➡Slime

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337
Q

Binary fission is found in:

A

Bacteria

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338
Q

Which combination of organelles is usually present in both animal and plant cells?

A

➡Mitochondira
➡Endoplasmic Reticulum
➡Ribosomes

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339
Q

Unlike eukaryotes, prokaryotes have no membrane-bound organelles. How, then are prokaryotes able to generate energy?

A

Prokaryotes generate proton gradients across their plasma membrane

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340
Q

Which statement describes an incorrect difference between a plant cell and a bacterial cell?

A

➡The bacterial call has 70S ribosomes whereas a plant cell has 80S ribosomes
➡Bacterial cell divides by binary fission whereas a plant cell divides by mitosis
➡Bacterial Cells do not have a nuclear membrane whereas plant cells have
✅None of the above

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341
Q

Which of the following components of an animal cell is not observed in a bacterial cell?

A

Nucleus

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342
Q

Eukaryotes can share which of the following structures with prokaryotes?

A

Cytoplasm

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343
Q

Which structure differentiates eukaryotic form a prokaryotic cell

A

Nuclear Membrane

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344
Q

The presence of which of the following feature would best indicate a eukaryotic cell?

A

Well-Defined membranous organelles

345
Q

In a typical compound microscope, the resolving power is_________,which is about that of naked eye, respectively.

A

2.0 micrometer, 500X

346
Q

Which of the following type of microscope is used to study the internal structures of cells?

A

Electron microscope

347
Q

It is an example of semi autonomous organelle found in both animal and plant cells:

A

Mitochondria

348
Q

Which of the following is not present in plant cells?

A

Flagella

349
Q

All of the following are common molecules in membrane of all type of cells except

A

Cholesterol

350
Q

Hydrophobic portion of Plasma membrane is present in/at

A

Inner core of plasma membrane

351
Q

Which of the following describes the fluid mosaic model of Plasma membrane structure

A

Phospholipid bilayer embedded proteins

352
Q

In plasma membrane, carbohydrates combine with the lipids and proteins to form glycolipids and glycoproteins and are oriented

A

Towards outside

353
Q

Which of the following is not a characteristic feature of animal cell membrane?

A

Prevent from osmotic lysis

354
Q

Which of the following acts as receptor site on plasma membrane

A

Glycoprotein

355
Q

Which structure is more important for cell life

A

Cell membrane

356
Q

Which of the following best describes the function of RER in eukaryotic cells?

A

Synthesis of proteins

357
Q

Which of the following statement is incorrect regarding endoplasmic reticulum

A

RER is more than SER in adipose tissue

358
Q

A function that is not related to smooth endoplasmic reticulum

A

Enzyme synthesis

359
Q

Which of the following organelle is associated with single membrane

A

Endoplasmic reticulum

360
Q

Which of the following function is performed by both types of Endoplasmic reticulum

A

Mechanical support

361
Q

Which of the following organelle is responsible for the production of steroid hormones

A

Smooth endoplasmic reticulum

362
Q

All of the following organelles contain DNA except

A

Ribosomes (do not have DNA)
nucleus, mitochondria, chloroplast (contain DNA)

363
Q

40S is smaller ribosomal subunit associated with

A

Yeast

364
Q

Ribosomes are associated with all of the following organelles except

A

Golgi apparatus

365
Q

Identify nonmembranous organelle from the following

A

Ribosome

366
Q

Identify the correct pair from the following options

A

Modification- Golgi apparatus

367
Q

Modification of proteins and lipids into glycoproteins and glycolipid is the function of

A

Golgi apparatus

368
Q

Golgi complex is involved in the formation of

A

Lysosomes

369
Q

The transport of secretory proteins takes place through organelles in which of the following order?

A

RER—– SER—-Golgi apparatus—–Secretory vesicles

370
Q

Which of the following organelle is most abundant in those animal cells which exhibit phagocytic activity

A

Lysosomes

371
Q

Strictly speaking autophagosomes are actually

A

Secondary lysosomes

372
Q

It is a disease characterised by accumulation of lipids in the brain cells leading to mental retardation and even death

A

Tay-Sach’s disease

373
Q

________ provides support for the individual Plant cell and contributes to the turgidity of leaves and younger parts of plants

A

Vacuole

374
Q

What is the specific name given to biological membrane that surrounds the vacuoles

A

Tonoplast

375
Q

Which of the following protein is present in micro tubules

A

Tubulin

376
Q

All of the following proteins are present in microfilaments of skeletal muscle cell except

A

Tubulin
Actin, myosin and tropomyosin are present

377
Q

Number of centrioles in a Cell after completion of G2 phase and during metaphase of mitosis is _______and_______ respectively.

A

4,4

378
Q

Which of the following cell organelli can be viewed with the help of high power light microscope

A

Mitochondria

379
Q

It is the correct location of ATP synthase mitochondria

A

Inner mitochondrial membrane

380
Q

Which of the following structure is involved in oxidative phosphorylation

A

Inner mitochondrial membrane

381
Q

Kreb cycle occurs in______of Mitochondria

A

Matrix

382
Q

Which of the following cell type is more appropriate to study mitochondria

A

Muscle cell

383
Q

Which of the following eukaryotic organelle has symbiotic origin with bacteria

A

Chloroplast

384
Q

Chlorophyll molecule resembles with

A

Haem part of haemoglobin

385
Q

Which of the following statement is incorrect

A

Inter-granum is photosynthetic

386
Q

Nucleolus is visible in

A

Interphase

387
Q

Which of the following organelle have a continuous connection with the nuclear membrane

A

RER

388
Q

It precisely describe the function of nucleoli

A

Formation of ribosomes

389
Q

rRNA is actively synthesized in

A

Nucleolus

390
Q

How many nuclear pores are present in a typical differentiated cells such as red blood cells

A

About 3-4 per nucleus

391
Q

Which of the following statement is true

A

Prokaryotic cells came before eukaryotic cells

392
Q

What is the main difference between prokaryotes and eukaryotes

A

Prokaryotes not have internal membrane

393
Q

Prokaryotic and eukaryotic cells generally have which of the following feature in common

A

Presence of ribosomes

394
Q

The distinguishing feature of prokaryotic cell is its

A

Cell wall

395
Q

Cytoplasmic streaming movement causes flow of all except

A

Endoplasmic reticulum

396
Q

Movement of Na+ across axon membrane via Sodium Potassium pump is an example of

A

Active transport

397
Q

Cell without nucleoli Die because they do not possess:

A

Ribosomes

398
Q

The source of illumination in electron microscope is

A

Beam of electrons

399
Q

These play vital role in defence activity of macrophages

A

Lysosomes

400
Q

Damage to one of the following immediately kills the cell whether its prokaryotic or Eukaryotic

A

Cell membrane

401
Q

Which of these is not a part of murein?

A

Proteins

402
Q

Which one always passes through nuclear membrane from nucleoplasm to cytoplasm

A

RNA

403
Q

They help to detoxify the harmful drugs

A

SER

404
Q

In Golgi apparatus cisternae are thought to be moving from________to_______ face

A

Convex, concave

405
Q

It is mismatched with reference to mitochondrial membrane

A

Outer membrane – chemiosmosis

406
Q

In cross section, each centriole consists of cylindrical array of

A

9 microtubule triplets

407
Q

Cell secretions are actually produced at _____ then transported to outside through ______and ______.

A

Ribosomes, endoplasmic reticulum, Golgi apparatus

408
Q

Types of ribosome present in the cytosol and organelles of Eukaryotic cell are respectively

A

60S and 40S

409
Q

Which of the following cell types would you expect to be abundant with the endoplasmic reticulum and Golgi bodies?
1.Plasma B cells( produce antibodies)
2. adipose cells (store fats)
3.Islets of Langerhans ( secret insulin)
4. red blood cells (transport oxygen)

A

1 and 3 only

410
Q

Which of the following is a protective structure in bacterial cells

A

Cell wall

411
Q

Plant cells are distinguishable from animal cells in containing

A

Cell wall

412
Q

Endoplasmic reticulum is absent in

A

Prokaryotic cells

413
Q

Which one is always unicellular

A

Mycoplasma

414
Q

If size of particle is large or it has polarity the suitable method of transportation will be

A

Facilitated diffusion

415
Q

Nucleolus contains

A

Ribosomal precursor

416
Q

Transport of glucose into the cell with the help of insulin is an example of

A

Facilitated diffusion

417
Q

The functional units of Golgi apparatus is

A

Cisternae

418
Q

Centrioles/centrosome takes part in

A

Spindle formation

419
Q

Outer and inner membrane of Mitochondria are

A

Structurally and functionally different

420
Q

Which substances can cross plasma membrane more easily

A

Lipids soluble

421
Q

Parts of cell membrane which is in contact with external and internal environment is

A

Hydrophilic

422
Q

The ratio of RNA and protein in a ribosome is

A

1:1

423
Q

Secretory granules bud off from

A

Golgi bodies

424
Q

What is a polysome

A

1mRNA and many ribosomes

425
Q

The vesicles which diffused to form stack of cisternae sacs are derived from

A

SER

426
Q

Which one is a self replicating organelle

A

Mitochondria

427
Q

The exact replica of the chromosome is

A

Chromatid

428
Q

Which of the following organelle is involved in autophagy

A

Lysosomes

429
Q

Lysosomes are most abundant in

A

Animal cells having phagocytic activity

430
Q

The absence of an enzyme that is involved in the catabolism of lipids results in

A

Tay-Sach’s Disease

431
Q

The lysosomes which eat parts of their own cells or cellular component during cellular starvation are called

A

Autophagosomes

432
Q

Enzymes necessary for photosynthesis are present in

A

Chloroplast

433
Q

Small and many vacuoles are generally found in

A

Plant cell
(Young plant cells have small vacuoles)

434
Q

In a non dividing cell centrioles are ______in number

A

2

435
Q

The conversion of amino acids into proteins is the function of

A

Ribosomes

436
Q

The process of photosynthesis occurs at

A

Chloroplast

437
Q

The size and number of Mitochondria in a Cell depends upon which factor

A

Physiological activities

438
Q

Which cell would have chloroplast in abundance

A

Mesophyll cells

439
Q

The type of cytoskeletal proteins that play important role in assembly and disassembly of spindle during Mitosis

A

Micro tubules

440
Q

Which of the following can maintain the shape of the cell

A

Intermediate filaments

441
Q

Which of the following function is not performed by the cell membrane of the plant cell

A

Phagocytosis

442
Q

Organelles involved in organic molecule synthesis and organic molecule breakdown respectively

A

Chloroplast and mitochondria

443
Q

Which organelli in Eukaryotic cell functionally resemble with mesosomes of prokaryotic cell

A

Mitochondria

444
Q

Which type of molecule will make channels for movement of neutral substances down concentration gradient

A

Protein

445
Q

Under which of the following conditions would you expect to find a cell with a predominance of free ribosome

A

A cell producing cytoplasmic enzymes

446
Q

Which of the following possesses a micro tubular structure similar to basal body

A

Centriole

447
Q

Mitochondria have enzyme for all of these processes except

A

Replication of DNA
glycolysis (if in options)

448
Q

If cell organelle are present near the exterior surface of the nucleus and consist of a cylindrical array of 9 clusters each having 3 microtubules then the organelle would be

A

Centriole

449
Q

Concerning entry of substances through plasma membrane which statement is correct

A

Only active transport needs energy

450
Q

An organelle having its own DNA, ribosomes and protein formation indicate that the organelle is

A

Self replicating

451
Q

The components of cells including its organelles can be separated by a process called;

A

Cell Fractionation

452
Q

A structure that is commonly present in both plant and animal cells is:

A

Peroxisomes

453
Q

Which of the following structures is not found in an animal cell?

A

Plasmodesmata

454
Q

In the cell wall, ____ molecules are arranged in criss-cross arrangement

A

Cellulose

455
Q

__ is the smallest unit that can carry out all activities of life.

A

Cell

456
Q

Most of the plant cells do not have:

A

➡Flagellum
➡Centriole
➡Lysosome

457
Q

Phagocytosis is the common character of:

A

Animal cell

458
Q

A human cheek cell and a spongy mesophyll cell from a leaf are examined under a microscope. The structures observed common in both are:

A

➡Cell membrane
➡Nucleus
➡Cytoplasm

459
Q

Most abundant components of plasma membrane are:

A

Proteins

460
Q

According to fluid mosaic model of plasma membrane, protein molecules are:

A

Embedded like mosaic

461
Q

It serves as site for various chemical reactions and house organelles of a cell:

A

Cytoplasm

462
Q

Which of the following metabolic process is said to be occur in the cytoplasm?

A

Glycolysis

463
Q

Consider a protein that is synthesized on the rough endoplasmic reticulum. Which of the folowing location is not possible final destination for this protein?

A

Cytoplasm

464
Q

According to fluid mosaic model of plasma membrane, protein molecules are;

A

Embedded like mosaic

465
Q

It serves as site for various chemical reactions and house of organelles of a cell:

A

Cytoplasm

466
Q

Which of the following metabolic process is said to occur in the cytoplasm?

A

Glycolysis

467
Q

Endoplasmic reticulum contains a system of flattened membrane-bounded sacs which are named as:

A

Cisternae

468
Q

Golgi apparatus consists of stacks of flattened membrane bounded:

A

Sacs

469
Q

The larger sub-unit of a eukaryotic ribosome sediments at:

A

60S

470
Q

In any cell, ribosomes can exist in all of the following forms except:

A

Attached with Golgi bodies

471
Q

Which organelle covers main space of the cell?

A

Endoplasmic Reticulum

472
Q

In plants, ___ is the major contributor to the turgor that provides support for the individual plant cell.

A

Vacuole

473
Q

Accumulation of lipids in brain cells lead to mental retardation and even death.

A

Tay-Sach’s disease

474
Q

Which of the following type of WBCs depend upon lysosomes for killing foreign agents

A

Neutrophils

475
Q

Cell organelle responsible for turgor movement in plants is:

A

Vacuole

476
Q

Reactions of Krebs cycle occur in/ at ___ of mitochondria.

A

Inner compartment

477
Q

Under compound microscope, mitochondria look like all except:

A

Lamella

478
Q

Mitochondria are absent in :

A

➡Blue Green algae
➡RBC

479
Q

The organelle, which acts as factory of sugar synthesis:

A

Chloroplast

480
Q

Pick an incorrect statement about chloroplast:

A

➡Present in all bryophytes❌
➡Present in all algae❌
➡Present in all plants❌
➡Present in all photosynthetic organisms✅

481
Q

Nuclear Nuclear pores regulate transport of substances between nucleoplasm and cytoplasm. Substances that enter in nucleus are;

A

➡ATP
➡Enzymes

482
Q

Which of the following cannot be termed as “mono-nucleate’?

A

Platelets

483
Q

It is not a property of nuclear membrane:

A

impermeable to water

484
Q

Large molecular weight rRNA and rDNA are present in which part of nucleolus:

A

Central Fibril are

485
Q

Genteic material of a prokaryotic cell is found in:

A

Cytoplasm

486
Q

In peptidoglycan cell wall of a bacterial cell, polysaccharide chains are bound to short chains of amino acids thorugh;

A

Covalent bond

487
Q

Cellular respiration in prokaryotic cells is associated with:

A

Cell membrane

488
Q

Which feature helps to differentiate prokaryotic cell from eukaryotic cell?

A

Composition of membranes

489
Q

Regarding cytoplasm of bacterial cell, this is not true:

A

It contains single circular DNA

490
Q

The components of cells including its organells can be separated by a process called;

A

Cell fractionation

491
Q

The cells of plants and animals can be distinguished by the presence or absence of;

A

Cell wall

492
Q

A structure that is commonly present in both plant and animal cells is;

A

Peroxisomes

493
Q

In fungi, cell wall is composed of _____, while in bacteria, it is composed of ____ respectively.

A

➡Chitin
➡Murein

494
Q

Most abundant components of plasma membrane are:

A

Proteins

495
Q

The only way in which a very large molecule such as protein could cross a cell membrane is;

A

Endocytosis

496
Q

It serves as site for various chemical reactions and house of organelles of a cell:

A

Cytoplasm

497
Q

Eukaryotic ribosomes are composed of RNA and protein in;

A

1:1

498
Q

Golgi apparatus consists of stacks of flattened memrbaen bounded;

A

Sacs

499
Q

Golgi complex is involved in the folrmation of __-

A

Lysosomes

500
Q

Lysosomal enzymes are syntheiszed by;

A

RER

501
Q

Tay-Sach’s disease is due to the deficiency of;

A

Enzyme

502
Q

Lysosomes are present in all of the following type of cells except;

A

Eryhtrocytes

503
Q

In plants, ___ is the major contributor to the turgor that provides support for the individual plant cell.

A

Vacuole

504
Q

It is incorrect about vacuoles found in animals cells;

A

Central in position

505
Q

It is an example of non-membranous organelle:

A

Ribosome

506
Q

Most the plant cell do not have:

A

➡Flagellum
➡Centriole
➡Lysosome

507
Q

Transfer of molecules from higher concentration to lower concentration thorugh carrier proteins is called:

A

Facilitated diffusion

508
Q

All of the following functions are related with cell membrane except;

A

Protection from osmotic lysis

509
Q

The concentration of potassium ions in a red blood cell is much higher than it is in the surrounding blood plasma, yet potassium ions continue to move into the cell. The process by which potassium ions move into the cell is called:

A

Active Transport

510
Q

In the unit membrane model, the region of the lipid bilayer attached to globular proteins is:

A

Hydrophilic

511
Q

A function of eukaroytic cell that occurs in cytoplasm:

A

Fermentation

512
Q

Most abundant substance in protopasm is:

A

Water

513
Q

Ribosomes are classified accoridng to their:

A

Sedimentation rate

514
Q

Ribosomes in the chloroplasts of eukaryotic cells are:

A

The same size and composition as in bacteria

515
Q

Which organelle covers main space of the cell?

A

Endoplasmic Reticulum

516
Q

Cytoplasmic streaming movement causes the flow of all except:

A

Endoplamsic Reticulum

517
Q

Which one of the following possesses the most prominent Golgi apparatus

A

An islet of langerhans cell

518
Q

It is an example of secondary lysosome:

A

Digestive vacuole

519
Q

Lysosomes ar single membranous organelles that mainly contain;

A

Hydrolyric enzymes

520
Q

Which o the following enzyme found in peroxisomes is involved in the breakdown of H2O2?

A

Catalase

521
Q

Cell organelle responisble or turogr movement in plants is:

A

Vacuole

522
Q

Membrane which surrounds the vacuole is called:

A

Tonoplast

523
Q

Reactions of Krebs cycle occur in of mitochondria

A

Inner compartment

524
Q

The size and number of mitochondria depends on cell’s:

A

Physiological activity

525
Q

Under compound microscope, mitochondria look like all except:

A

Lamella

526
Q

Mitochondira contain all of the following except:

A

Thylakoids

527
Q

Mitochondria are absent in:

A

➡Blue Green algae
➡RBC

528
Q

The organelle, whic hacts as actory of sugar synthesis:

A

Chloroplast

529
Q

If we separate the cell organelles of a living cell, then which part can be alive?

A

Chloroplast

530
Q

Pick an incorrect statement about chloroplast:

A

Present in all photosynthetic organisms

531
Q

Nuclear pores regulate transport substances between nucleoplasm and cytoplasm. Substances that enter in nucleus are;

A

➡ATP
➡Enzymes

532
Q

Which of the following cannot be termed as “mono-nucleates”

A

Platelets

533
Q

All of the following are not visible during dividing phase in a frog’s skin cell except:

A

Chromosomes

534
Q

Cytoskeleton is present in all of the following except:

A

Bacterial cells

535
Q

In the peptidoglycan cell wall of a bacterial cell, polysaccharides chains are bound to short chains of amino acids through:

A

Covalent bond

536
Q

What is the similarity between prokaryotic and eukaryotic cell?

A

Composition of ribosomes

537
Q

Semiautonoomus organelle is;

A

Chloroplast

538
Q

Which of the following organelle is not present in plant cells?

A

Flagella

539
Q

Which of the following best describes the function of the rough endoplasmic reticulum n eukaryotic cells?

A

Synthesis of Proteins

540
Q

Which of the following eukaryotic organelle has symbiotic origin with bacteria?

A

Chloroplast

541
Q

Which of the following statements is true?

A

Prokaryotic cells came before eukaryotic cells

542
Q

Which of the following organelle lack ribosomes?

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