Cell Biology in Biotechnology MCQs

Question 1

Match the items in Group I with Group II. Group I Group II P. Receptor tyrosine kinase 1. Inactivation of G-proteins b. Q. Cyclic GMP (cGMP) 2. Reception of insulin signal R. GTPase activating protein (GAP) 3. Thyroid hormone S. Nuclear receptor 4. Receptor guanylyl cyclase

Accepted Answer

P-2, Q-4, R-1, S-3

Answer

P-1, Q-3, R-4, S-2

Answer

P-2, Q-4, R-3, S-1

Answer

P-3, Q-1, R-4, S-2

Question 2

In a migrating cell the relative position of the . . . . . . . . and the . . . . . . . . determines the polarity of the cell

Accepted Answer

Nucleus, Golgi

Answer

Golgi, Centriole

Answer

Nucleus, Mitochondria

Answer

Golgi, Mitochondria

Question 3

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

Accepted Answer

It works against the concentration gradient

Answer

Its rate is higher than simple diffusion

Answer

The partition coefficient of the solute is irrelevant for it

Answer

It can be saturated at high concentration of the solute

Question 4

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.

Accepted Answer

Both (A) and (R) are true and (R) is the correct reason for (A)

Answer

Both (A) and (R) are true but (R) is not the correct reason for (A)

Answer

(A) is true but (R) is false

Answer

(A) is false but (R) is true

Question 5

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

Accepted Answer

Chloride

Answer

Sodium

Answer

Potassium

Answer

Calcium

Question 6

Cholera toxin increases cAMP levels by

Accepted Answer

Modifying Gs protein

Answer

Modifying Gi protein

Answer

Binding to adenylate cyclase

Answer

Activating cAMP phosphodiesterase

Question 7

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

Accepted Answer

G1 and M

Answer

G2 and S

Answer

M and S

Answer

G1 and G2

Question 8

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

Accepted Answer

P-4, Q-1, R-2, S-3

Answer

P-2, Q-1, R-4, S-3

Answer

P-3, Q-2, R-1, S-1

Answer

P-4, Q-2, R-1, S-3

Question 9

Gas vacuoles are present in

Accepted Answer

Anabaena flos-aquae

Answer

Bacillus subtilis

Answer

Acanthurus nigrofuscus

Answer

Mycobacterium tuberculosis