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Question (11)

QN002851

The space between the nucleus and cell membrane is filled with:

(A) chlorophyll
(B) cytoplasm
(C) vacuole
(D) sap

Correct Answer: B

Explanation:

Cytoplasm fills the space between the nucleus and membrane.

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Question (12)

QN002852

Which statement best defines a cell membrane?

(A) A rigid layer found only in plants
(B) A porous covering enclosing the cell contents
(C) A storage chamber of the cell
(D) A structure that makes food

Correct Answer: B

Explanation:

Cell membrane encloses the cell and allows exchange of materials.

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Question (13)

QN002853

The cell membrane is called porous because it:

(A) contains pores visible to eyes
(B) allows materials to enter and leave the cell
(C) stores food inside the cell
(D) produces energy continuously

Correct Answer: B

Explanation:

It permits movement of substances across the membrane.

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Question (14)

QN002854

Which structure is present in plant cells but absent in cheek cells?

(A) Cytoplasm
(B) Nucleus
(C) Cell membrane
(D) Cell wall

Correct Answer: D

Explanation:

Cheek cells are animal cells and lack a cell wall.

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Question (15)

QN002855

A student observes rectangular cells under the microscope. The cells most likely belong to:

(A) human cheek
(B) nerve tissue
(C) onion peel
(D) blood

Correct Answer: C

Explanation:

Onion peel cells are rectangular in shape.

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Question (16)

QN002856

Human cheek cells are generally:

(A) spindle-shaped
(B) polygonal and thin
(C) tube-like
(D) star-shaped

Correct Answer: B

Explanation:

Cheek cells are polygonal and form a protective lining.

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Question (17)

QN002857

Which cell organ helps maintain shape and support in plant cells through storage of substances?

(A) Nucleus
(B) Chloroplast
(C) Vacuole
(D) Cell membrane

Correct Answer: C

Explanation:

Vacuoles help maintain shape and store substances.

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Question (18)

QN002858

Chloroplasts are important because they:

(A) control cell division
(B) carry messages
(C) help in photosynthesis
(D) remove wastes only

Correct Answer: C

Explanation:

Chloroplasts contain chlorophyll for photosynthesis.

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Question (19)

QN002859

Which pair is correctly matched?

(A) Nerve cell — spindle-shaped
(B) Muscle cell — branched and long
(C) Nerve cell — carries messages
(D) Muscle cell — produces chlorophyll

Correct Answer: C

Explanation:

Nerve cells carry messages in the body.

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Question (20)

QN002860

A muscle cell is spindle-shaped mainly because this shape helps it:

(A) perform photosynthesis
(B) contract and relax efficiently
(C) absorb more sunlight
(D) store starch

Correct Answer: B

Explanation:

Spindle shape helps muscle cells contract and relax.

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Question (11)

The space between the nucleus and cell membrane is filled with:

Explanation:

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Question (12)

Which statement best defines a cell membrane?

Explanation:

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Question (13)

The cell membrane is called porous because it:

Explanation:

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Question (14)

Which structure is present in plant cells but absent in cheek cells?

Explanation:

Link:

Question (15)

A student observes rectangular cells under the microscope. The cells most likely belong to:

Explanation:

Link:

Question (16)

Human cheek cells are generally:

Explanation:

Link:

Question (17)

Which cell organ helps maintain shape and support in plant cells through storage of substances?

Explanation:

Link:

Question (18)

Chloroplasts are important because they:

Explanation:

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Question (19)

Which pair is correctly matched?

Explanation:

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Question (20)

A muscle cell is spindle-shaped mainly because this shape helps it:

Explanation:

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