Cell Biology MCQ Questions & Answers

21

Which one of the following statement is incorrect about facilitated diffusion?

A) Its rate is higher than simple diffusion B) The partition coefficient of the solute is irrelevant for it C) It can be saturated at high concentration of the solute D) It works against the concentration gradient

Discuss

Answer & Solution

Answer: Option D

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22

Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: The elucidation of ribosome structure helps in the development of new generation drugs.
Reason: The high resolution of macromolecular structure has enabled in structure-based drug design.

A) Both (A) and (R) are true and (R) is the correct reason for (A) B) Both (A) and (R) are true but (R) is not the correct reason for (A) C) (A) is true but (R) is false D) (A) is false but (R) is true

Discuss

Answer & Solution

Answer: Option A

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23

The transport that will be the most affected following mutation III cystic fibrosis transmembrane conductance regulator (CFTR) gene is

A) Sodium B) Potassium C) Chloride D) Calcium

Discuss

Answer & Solution

Answer: Option C

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24

Cholera toxin increases cAMP levels by

A) Modifying G_i protein B) Modifying G_s protein C) Binding to adenylate cyclase D) Activating cAMP phosphodiesterase

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Answer & Solution

Answer: Option B

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25

The genome is diploid at the end of which phases of a human mitotic cell cycle?

A) G₂ and S B) G₁ and M C) M and S D) G₁ and G₂

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Answer & Solution

Answer: Option B

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26

Match Group I with Group II.

Group I	Group II
P. Fibronectin	1. Uptake of amino acids and glucose
Q. Insulin	2. Trypsin inhibitor
R. α-Macroglobulin	3. Binds iron
S. Transferrin	4. Cell attachment to substratum

A) P-2, Q-1, R-4, S-3 B) P-3, Q-2, R-1, S-1 C) P-4, Q-2, R-1, S-3 D) P-4, Q-1, R-2, S-3

Discuss

Answer & Solution

Answer: Option D

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27

Gas vacuoles are present in

A) Anabaena flos-aquae B) Bacillus subtilis C) Acanthurus nigrofuscus D) Mycobacterium tuberculosis

Discuss

Answer & Solution

Answer: Option A

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28

At what stage mitosis occurs in bacteria?

A) Vegetative phase B) Reproductive phase C) Both A and B D) None of the above

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Answer & Solution

Answer: Option D

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29

In the cell cycle of a typical eukaryote, the sequence of events operating at the time of cell division is

A) S phase → G₂ phase → G₁ phase → M phase B) S phase → M phase → G₁ phase → G₂ phase C) S phase → G₂ phase → M phase → G₁ phase D) S phase → G₁ phase → M phase → G₂ phase

Discuss

Answer & Solution

Answer: Option C

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30

Match the proteins in Group I with cellular processes in Group II.

List-I	List-II
P. p53	1. DNA packaging
Q. Lysozyme	2. Apoptosis
R. Tubulins	3. Hydrolysis of polysaccharides
S. Histones	4. Chromosome segregation

A) P-4, Q-2, R-3, S-1 B) P-2, Q-3, R-1, S-4 C) P-4, Q-3, R-1, S-2 D) P-2, Q-3, R-4, S-1

Discuss

Answer & Solution

Answer: Option D

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Cell Biology MCQ Questions &amp; Answers | Biotechnology

Cell Biology MCQ Questions & Answers | Biotechnology