Cell-the Unit Of Life Flashcards
(109 cards)
1
Q
Prokaryotic cell is found in
A
Monera
2
Q
Glycocalyx is
A
Chemically carbohydrate-Mucopolysaccharide
3
Q
Thick tough glycocalyx is
A
Capsule
4
Q
Loose sticky glycocalyx is
A
Slimy layer
5
Q
Capsule provides
A
Pathogenicity
6
Q
Slime layer prevents from
A
Dessication
7
Q
Monera has cell wall.
A
True
8
Q
Protista has cell wall without exception.
A
False, some has cell wall.
9
Q
Monera has which type of cell wall?
A
Peptidoglycan
10
Q
Peptidoglycan is made of
A
Protiens and carbohydrates
11
Q
Peptidoglycan is majorly made of
A
Carbohydrates
12
Q
Fungi has cell wall
A
True
13
Q
Type of cell wall in fungi
A
Chitin
14
Q
Plantae has cell wall
A
True
15
Q
Type of cell wall in plantae
A
Cellulosic
16
Q
4 roles of cell wall in Bacteria
A
shape to cell
Structural support
Prevent osmotic bursting
Prevent from collapsing
17
Q
Glycan is polymer of
A
NAG and NAM
18
Q
How penicillin kills bacteria
A
By preventing crosslinking between NAG AND NAM
19
Q
All bacteria can be killed.
A
False, because mycoplasma don’t have cell wall
20
Q
All bacteria have cell wall made of Peptidoglycan.
A
No in archaebacteria different type.
21
Q
Cell Envelope is made of
A
Glycocalyx+cell wall+cell membrane
22
Q
Cell envelope is thin in which type of bacteria
A
Gram -ve
23
Q
Cell envelope is thin in gram negative because of
A
Thin cell wall
24
Q
Thick cell envelope is in
A
Gram +ve
25
Cell envelope is thick because if
Thick cell wall
26
Mesosome is well developed in
Gram +ve
27
Mesosome poorly developed in
Gram -ve
28
Fankia is gram +/-
+
29
E coli is gram+/-
-
30
Clostridium is gram +/-
+
31
Mycoplasma is gram +/-
-
32
Lactobacillus is gram +/-
+
33
Cyanobacterium is gram +/-
-
34
Mycobacterium is gram +/-
+
35
Rhizobium is gram +/-
-
36
Porins are present in gram +/-
- only
37
Gram staining is based on thickness of
Cell Envelope
38
Structure which is chemically same in prokaryotes and eukaryotes
Cell membrane
39
Only water allowed no solute then which type of membrane it is
Semipermeable membrane
40
When one type of solute is allowed and one type of not then which type of cell membrane it is
Selectively permeable
41
Plasma membrane is of which type membrane
Selectively Permeable
42
Thread like extension in a cell for motility
Flagella
43
All bacteria have flagella
False
44
Eukaryotes don’t have flagella
False
45
Parts of prokaryotic flagella
Hook filament and basal body
46
Longest part of prokaryotic flagella
Filament
47
Prokaryotic flagella is made of which protien
Flagellin
48
Eukaryotic flagella is made up of which protein
Tubilin
49
Tubular shape structure from cell membrane
Pilli
50
Protien from which pilli is made
Special protienPillin
51
Bristle shape structures arising from cell membrane are
Fimbrae
52
Function of fimbrae
Attach itself on rock or host tissues
53
Cilia is present in
Only eukaryotes
54
Inward extensions or infolding of plasma membrane is
Mesosome
55
Mesosomes are in the form of
Lamallae
Tubule
Vesicles
56
Five Function of mesosomes
Cell division and dna rep
Help Secretion
Respiration
Help in cell wall formation
Increase the surface are and enzymatic content
57
Other membranous extensions then mesosomes are
Chromatophores
58
Chromatophores bear
Pigments to help in photosynthesis
59
Chromatophores are present in
Cyanobacteria
60
Genomic dna in prokaryotes is called
Nucleoid
61
Nucleoid js present in
Cytoplasm
62
On necessary gene are present on which dna of prokaryotes
Nucleoid
63
Dna of prokaryotes is
Single cirr ds
64
Extrachromosomal dna in prokaryotes is
Plasmid
65
Extra-phenotypic characteristics are given by which dna to the bacteria
Plasmid
66
Uncontrolled cell division is due to which plasmid
Ti
67
Resistance inducing plasmid
R plasmid
68
Plasmid used in bacterial reproduction
F plasmid
69
Ribosome has membrane or not
No
70
Ribosomes are associated with what in prokaryotes
Plasma membrane
71
Size of plasmids
15-20 nm
72
Chemically ribosomes are made up of
rRNA and proteins
73
Ribosomes in Bacteria
30s+50s=70s
74
S stands for, and what it means
Suvwdberg’s constant, indirect measure of size and density
75
Many ribosome and proteins together make a long chain called
Polyribosomes
76
In bacterial cell what are used for storage
Inclusion bodies
77
Features of inclusion bodies
Without membrane
Present in cytoplasm
For storage
Insoluble
78
Types of in inclusion bodies
Sulfur granule
P granule
Cyanophycean granule
Gas vacuole
Glycogen granule
79
Eukaryotes have organelle with membrane only
False, ribosomes
80
Organelles without membrane
Ribosome
Centriole
Nucleolus
81
Organelles with single membrane
Er
Golgi
Vesicles
Vacuoles
Lysosome
Peroxisome
Cilia and flagella
82
Organelles with double membrane
Mitochondria
Plastids
Nucleus
83
Cell membrane was discovered due to
Discovery of electron microscope in 1950s
84
Chemical analysis of cell membrane was done via? And what was the composition?
RBCs,
Lipid 40 %
Protien 52 %
Other 8%
85
Structure of cell membrane is made up of
Lipids+protiens+cholesterol+carbohydrates
86
Based on ease of extract different type of proteins in cell membrane are
Integral
Peripheral
87
Carbohydrates present on lipids
Glycolipids
88
Carbohydrates present on protein
Glycoproteins
89
What varies in the cell membrane of different cells
Ratio of protein and lipid
90
Which model is most successful model of cell membrane and given by whom and its characteristics
Fluid mosiac model by singer and nicolson in 1972
-membrane is quasi fluid
-fluidity
-flip floo movements of phospholipids
91
On the basis of function types of proteins
Channel
Pump
Receptors
92
Role of cell membrane
Transport
Growth
Secretion
Endocytosis
Cell interactions
93
Which requires atp channel or pump
Pump
94
Cell wall is dead or living?
Dead layer
95
Cell wall is present in
Plant and fungi
96
Is Cell wall is also present in prokaryotes? and if what it is made up of?
Peptidoglycan
97
What is the role of cell wall
Rigidity
Structure support
Precent from bursting
Prevent infection
Cell to cell interaction
Prevent entry of macromolecules
98
Algae cell wall is made up of
Cellulose
Galactons
Mannans
Minerals like calcium carbonate
99
Plant cell wall is made up of
Cellulose
Hemicellulose
Pectin
Protiens
100
Primary cell wall rigid or not
It is rigid
101
Which cell wall is capable of growth and which is not
Primary and not secondary
102
Secondary cell wall is made up of
Lignin - sclerenchyma fibres vessels
Suberin cork cells
103
Secondary cell wall is present
In between primary cell wall and plasma membrane
104
What glues two plant cell
Middle lamella
105
Middle lamella is made up of
Calcium pectate
106
Pits are formed due to
Absence of secondary cell wall
107
How cytoplasm connection works
By transvehrsion of cell wall and middle lamella by plasmodesmata
108
What is endomembrane system
Organelles made up of membrane and acts in a coordinated manner
109
Organelles included in endomembrane system
ER
Golgi
Lysosomes
Vacuoles
