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cell class 11 cbse > cell biology cbse > Flashcards

cell biology cbse Flashcards

1
Q

What is the basic structural and functional unit of life?

A

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

What are the two main types of cells?

A

Prokaryotic and Eukaryotic

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4
Q

Fill in the blank: Prokaryotic cells do not have a __________.

A

nucleus

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5
Q

Which type of cell is characterized by a defined nucleus?

A

Eukaryotic cell

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6
Q

What is the jelly-like substance inside a cell called?

A

Cytoplasm

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7
Q

What structure controls the entry and exit of substances in a cell?

A

Cell membrane

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8
Q

Which organelle is known as the powerhouse of the cell?

A

Mitochondria

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9
Q

What is the function of ribosomes?

A

Protein synthesis

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10
Q

Which organelle is responsible for photosynthesis in plant cells?

A

Chloroplast

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11
Q

True or False: The cell wall is present in animal cells.

A

False

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12
Q

What is the primary function of the endoplasmic reticulum?

A

Protein and lipid synthesis

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13
Q

What are lysosomes often referred to as?

A

The digestive system of the cell

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14
Q

Fill in the blank: The __________ is the control center of the cell.

A

nucleus

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15
Q

What is the function of the Golgi apparatus?

A

Modifying, sorting, and packaging proteins

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16
Q

Which organelle is involved in the detoxification of harmful substances?

A

Smooth endoplasmic reticulum

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17
Q

True or False: Plant cells have larger vacuoles than animal cells.

A

True

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18
Q

What is the role of the cytoskeleton?

A

Maintaining cell shape and structure

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19
Q

Which cellular structure is responsible for movement in some cells?

A

Flagella or cilia

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20
Q

What is the function of the plasma membrane?

A

Regulating the movement of substances in and out of the cell

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21
Q

Fill in the blank: The __________ helps in the formation of the spindle fibers during cell division.

A

centrioles

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22
Q

What component of the cell is selectively permeable?

A

Cell membrane

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23
Q

Which type of cell lacks membrane-bound organelles?

A

Prokaryotic cell

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24
Q

What is the main component of the cell wall in plants?

A

Cellulose

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25
True or False: Ribosomes can be found free-floating in the cytoplasm.
True
26
What is the function of peroxisomes?
Breaking down fatty acids and detoxifying harmful substances
27
What is chromatin?
The material that makes up chromosomes, consisting of DNA and proteins
28
Fill in the blank: The __________ is a double membrane that surrounds the nucleus.
nuclear envelope
29
Which process involves the movement of water through a semi-permeable membrane?
Osmosis
30
What is the term for the network of protein filaments that helps maintain cell shape?
Cytoskeleton
31
What is the primary role of the cell membrane?
To protect the cell and control what enters and exits
32
True or False: All cells have a cell wall.
False
33
What is the function of vacuoles in plant cells?
Storage of substances and maintaining turgor pressure
34
Fill in the blank: The __________ is involved in the synthesis of ATP.
mitochondria
35
What is the main difference between plant and animal cells?
Plant cells have a cell wall and chloroplasts, while animal cells do not.
36
Which organelle is responsible for packaging and transporting proteins?
Golgi apparatus
37
What is the primary function of the nucleolus?
Ribosome production
38
True or False: The rough endoplasmic reticulum is studded with ribosomes.
True
39
What is the function of the cell wall?
To provide support and protection to the cell
40
Fill in the blank: The __________ is a semi-permeable structure surrounding the cell.
cell membrane
41
Which organelle is known for detoxifying harmful substances?
Smooth endoplasmic reticulum
42
What is the role of chloroplasts?
To conduct photosynthesis in plant cells
43
True or False: Animal cells have chloroplasts.
False
44
What is the function of the cytoplasm?
To hold organelles and provide a medium for metabolic reactions
45
Fill in the blank: __________ are the sites of protein synthesis.
Ribosomes
46
What is the role of the cell membrane in relation to homeostasis?
Maintaining a stable internal environment by regulating what enters and exits the cell
47
Which type of cell division occurs in somatic cells?
Mitosis
48
True or False: Prokaryotic cells are generally larger than eukaryotic cells.
False
49
What is the function of centrioles during cell division?
To help organize the spindle fibers
50
What is the role of the Golgi apparatus in the cell?
To modify, sort, and package proteins and lipids
51
What is the primary component of the plasma membrane?
Phospholipids
52
True or False: Mitochondria contain their own DNA.
True
53
What is the function of the rough endoplasmic reticulum?
Synthesis of proteins
54
Fill in the blank: The __________ is responsible for the synthesis of lipids.
smooth endoplasmic reticulum
55
Which organelle is involved in the synthesis of ribosomal RNA?
Nucleolus
56
What is the primary role of lysosomes?
Digestion and waste removal
57
True or False: All cells have organelles.
True
58
What is the function of the plasma membrane?
To protect the cell and control the movement of substances
59
Fill in the blank: The __________ provides structural support to plant cells.
cell wall
60
What is the primary function of vacuoles in animal cells?
Storage of substances
61
Which organelle is responsible for energy production?
Mitochondria
62
What is the role of the cytoskeleton?
To maintain cell shape and aid in cell movement
63
True or False: Endoplasmic reticulum is involved in protein and lipid synthesis.
True
64
What are the two types of endoplasmic reticulum?
Rough and smooth endoplasmic reticulum
65
Fill in the blank: The __________ is the site of photosynthesis.
chloroplast
66
What is the primary role of the cell membrane?
To regulate the entry and exit of substances
67
Which structure is responsible for packaging proteins?
Golgi apparatus
68
What is the function of the nuclear envelope?
To protect the nucleus and regulate the movement of materials in and out
69
True or False: Ribosomes are only found attached to the endoplasmic reticulum.
False
70
Fill in the blank: The __________ is the fluid portion of the cell.
cytosol
71
What is the primary role of the Golgi apparatus?
To modify, sort, and package proteins
72
Which organelle is involved in detoxifying harmful substances?
Smooth endoplasmic reticulum
73
True or False: The nucleus contains the cell's genetic material.
True
74
Fill in the blank: The __________ is the site of aerobic respiration.
mitochondria
75
What is the function of the cytoplasmic membrane?
To protect the cell and regulate what enters and exits
76
True or False: All prokaryotic cells contain a nucleus.
False
77
What is the function of the nucleolus?
To produce ribosomal RNA
78
Fill in the blank: The __________ are involved in protein synthesis.
ribosomes
79
Which structure is responsible for maintaining the shape of the cell?
Cytoskeleton
80
What is the primary function of vacuoles in plant cells?
Storage of water and nutrients
81
True or False: Mitochondria are only found in plant cells.
False
82
What is the role of the smooth endoplasmic reticulum?
Synthesis of lipids and detoxification
83
Fill in the blank: The __________ is the barrier that separates the cell from its environment.
plasma membrane
84
What is the primary function of lysosomes?
Digestion of macromolecules
85
Which organelle is known as the 'powerhouse of the cell'?
Mitochondria

cell class 11 cbse (1 decks)

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