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Science cells Flashcards

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1
Q

What is the basic unit of life?

A

The cell.

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2
Q

True or False: All living organisms are made up of cells.

A

True.

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3
Q

Fill in the blank: The cell membrane is also known as the _______.

A

plasma membrane.

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4
Q

What organelle is responsible for energy production in the cell?

A

Mitochondria.

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5
Q

Which part of the cell contains the genetic material?

A

Nucleus.

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6
Q

Multiple Choice: Which of the following is NOT a type of cell?

A

A. Prokaryotic B. Eukaryotic C. Virus D. Bacterial

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7
Q

What is the function of ribosomes?

A

Protein synthesis.

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8
Q

True or False: Plant cells have cell walls while animal cells do not.

A

True.

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9
Q

Fill in the blank: The jelly-like substance inside the cell is called _______.

A

cytoplasm.

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10
Q

What structure controls the movement of substances in and out of the cell?

A

Cell membrane.

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11
Q

Multiple Choice: Which organelle is involved in packaging and transporting proteins?

A

A. Golgi apparatus B. Lysosome C. Endoplasmic reticulum D. Nucleus

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12
Q

What is the primary function of the endoplasmic reticulum?

A

Synthesis of proteins and lipids.

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13
Q

True or False: Prokaryotic cells do not have a nucleus.

A

True.

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14
Q

Fill in the blank: The organelle that breaks down waste materials is called a _______.

A

lysosome.

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15
Q

What is the role of the cell wall in plant cells?

A

Provides structure and support.

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16
Q

Multiple Choice: Which organelle is known as the ‘powerhouse of the cell’?

A

A. Nucleus B. Mitochondria C. Ribosome D. Golgi apparatus

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17
Q

What is the function of chloroplasts?

A

Photosynthesis.

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18
Q

True or False: Animal cells have chloroplasts.

A

False.

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19
Q

Fill in the blank: The semi-permeable barrier surrounding the cell is called the _______.

A

cell membrane.

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20
Q

What is the main component of the cell membrane?

A

Phospholipids.

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21
Q

Multiple Choice: Which of the following is a feature of eukaryotic cells?

A

A. Membrane-bound organelles B. No nucleus C. Smaller size D. Simpler structure

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22
Q

What structure helps in cell division?

A

Centrioles.

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23
Q

True or False: The cytoskeleton provides shape and support to the cell.

A

True.

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24
Q

Fill in the blank: The _______ is a network of protein filaments that helps the cell maintain its shape.

A

cytoskeleton.

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25
What is the function of vacuoles in plant cells?
Storage.
26
Multiple Choice: Which of the following structures is found in both plant and animal cells?
A. Nucleus B. Cell wall C. Chloroplast D. Vacuole
27
What is the role of the Golgi apparatus?
Modifying, sorting, and packaging proteins.
28
True or False: All cells have a nucleus.
False.
29
Fill in the blank: The _______ is the site of ribosome production.
nucleolus.
30
What is the function of the plasma membrane?
Regulates what enters and exits the cell.
31
Multiple Choice: Which cell organelle contains enzymes for digestion?
A. Lysosome B. Ribosome C. Golgi apparatus D. Mitochondria
32
What is the primary component of the cell wall in plants?
Cellulose.
33
True or False: Mitochondria are involved in cellular respiration.
True.
34
Fill in the blank: The _______ is a double-membrane organelle that contains its own DNA.
mitochondria.
35
What is the function of the smooth endoplasmic reticulum?
Lipid synthesis and detoxification.
36
Multiple Choice: Which of the following is NOT a function of the cell membrane?
A. Energy production B. Cell communication C. Selective permeability D. Structural support
37
What is the role of the rough endoplasmic reticulum?
Synthesis of proteins that are secreted from the cell.
38
True or False: Cytoplasm is found only in eukaryotic cells.
False.
39
Fill in the blank: Organelles that contain enzymes to digest cellular waste are called _______.
lysosomes.
40
What structure is responsible for the movement of the cell?
Flagella or cilia.
41
Multiple Choice: Which structure helps in the transport of materials within the cell?
A. Cytoplasm B. Endoplasmic reticulum C. Golgi apparatus D. Nucleus
42
What is the purpose of the cell cycle?
To ensure proper cell division and replication.
43
True or False: The cell membrane is impermeable to all substances.
False.
44
Fill in the blank: The _______ is the liquid portion of the cytoplasm.
cytosol.
45
What is the function of peroxisomes?
Break down fatty acids and detoxify harmful substances.
46
Multiple Choice: Which of the following is found only in plant cells?
A. Chloroplasts B. Mitochondria C. Ribosomes D. Nucleus
47
What is the role of the nucleolus?
To produce ribosomal RNA.
48
True or False: All cells have a cell wall.
False.
49
Fill in the blank: The _______ is a membrane-bound sac that stores substances.
vacuole.
50
What is the function of the cytoskeleton?
Provides structural support and aids in cell movement.
51
Multiple Choice: Which part of the cell is selectively permeable?
A. Cell membrane B. Cytoplasm C. Nucleus D. Ribosome
52
What structure contains the cell's genetic blueprint?
DNA in the nucleus.
53
True or False: The Golgi apparatus is involved in protein synthesis.
False.
54
Fill in the blank: The _______ is a network of membranes involved in the transport of materials.
endoplasmic reticulum.
55
What is the function of the cell membrane proteins?
Facilitate communication and transport across the membrane.
56
Multiple Choice: Which organelle is responsible for detoxifying harmful substances?
A. Peroxisome B. Lysosome C. Golgi apparatus D. Mitochondria
57
What structure is responsible for the synthesis of ATP?
Mitochondria.
58
True or False: Cilia are used for locomotion in some cells.
True.
59
Fill in the blank: The _______ is the outermost layer of plant cells.
cell wall.
60
What is the primary function of the cell nucleus?
Control cell activities and store genetic information.
61
Multiple Choice: Which structure is involved in protein modification?
A. Golgi apparatus B. Ribosome C. Nucleus D. Mitochondria
62
What is the main difference between prokaryotic and eukaryotic cells?
Eukaryotic cells have a nucleus; prokaryotic cells do not.
63
True or False: Ribosomes can be found free-floating in the cytoplasm.
True.
64
Fill in the blank: The _______ is a small structure that assembles proteins.
ribosome.
65
What is the function of the vesicles?
Transport materials within the cell.
66
Multiple Choice: Which of the following is a component of the cytoskeleton?
A. Microtubules B. Nucleus C. Golgi apparatus D. Mitochondria
67
What structure helps in the synthesis of lipids?
Smooth endoplasmic reticulum.
68
True or False: The cell's shape is determined by its function.
True.
69
Fill in the blank: The _______ are small hair-like structures that help in movement.
cilia.
70
What is the role of the cell membrane's cholesterol?
Stabilizes the membrane's fluidity.
71
Multiple Choice: Which organelle is involved in the synthesis of ribosomal RNA?
A. Nucleolus B. Golgi apparatus C. Mitochondria D. Lysosome
72
What is the primary function of the cell's cytoplasm?
Houses organelles and facilitates cellular processes.
73
True or False: All cells have the same shape and size.
False.
74
Fill in the blank: The _______ is a structure that helps in cell shape and movement.
cytoskeleton.
75
What is the function of the nuclear envelope?
Protects the nucleus and regulates passage of materials.
76
Multiple Choice: Which organelle is responsible for modifying proteins?
A. Golgi apparatus B. Ribosome C. Lysosome D. Nucleus
77
What is the primary role of the cell's plasma membrane?
To protect and organize the cell.
78
True or False: Centrioles are found in plant cells.
False.
79
Fill in the blank: _______ are the basic structural units of all living organisms.
Cells.
80
What is the function of the extracellular matrix?
Provides structural and biochemical support to surrounding cells.
81
Multiple Choice: Which organelle is known for its double membrane?
A. Mitochondria B. Ribosome C. Golgi apparatus D. Lysosome
82
What is the role of the cell's cytosol?
Fluid component of the cytoplasm where organelles are suspended.
83
True or False: The primary function of lysosomes is to store nutrients.
False.
84
Fill in the blank: The _______ is a structure that contains enzymes for digestion.
lysosome.
85
What is the primary role of the nucleolus?
Ribosome production.
86
Multiple Choice: Which organelle is involved in cellular respiration?
A. Mitochondria B. Golgi apparatus C. Endoplasmic reticulum D. Ribosome
87
What is the function of the cell's nucleus?
To store and protect genetic information.
88
True or False: Vacuoles are larger in plant cells than in animal cells.
True.
89
Fill in the blank: The _______ is a network of protein fibers that help maintain cell shape.
cytoskeleton.
90
What is the function of the ribosomes located on the rough endoplasmic reticulum?
Synthesize proteins for export.
91
Multiple Choice: Which organelle is responsible for the synthesis of ATP?
A. Mitochondria B. Lysosome C. Ribosome D. Golgi apparatus

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