D:-A-i, B-iv, C-iii, D-iv
Correct Answer:- Option-C
Question33:-Movement of wa+ through open voltage-gated wat channels is driven by
A:-The wat concentration gradient across the membrane
B:-The membrane potential at rest

C:-The wat concentration gradient across the membrane and membrane
potential at rest

D:-The wat concentration gradient across the membrane and membrane
potential at the peak of the action potential

Correct Answer:- Option-D

Question34:-Select the incorrect statements concerning membrane proteins

A. The plasma membrane of the cell contains 50% of the proteins by mass

8. The transmembrane proteins are amphipathic and can function on both sides
of the bilayer or transport molecules across it

C. Mutation (V509A) in integral membrane protein thyrotropin receptor leads to
congential hypothyrodism

D. Peripheral membrane proteins are permanently attached to one face of a
membrane by noncovalent interactions with other membrane proteins and involve
in cell signalling

A:-A, B and C

B:-A and C

C:-Only D

D:-C and D

Correct Answer:- Option-D

Question35:-The statements below address receptor-mediated endocytosis. Which
of the following statements about receptor-mediated endocytosis is true?

A. In receptor-mediated endocytosis, the extracellular materials bind to
complementary receptors on the cell surface and enter the cell

B. GGA adaptor molecule associated with clathrin-mediated endocytosis

C. Receptor-mediated endocytoasis (RME) leads to the formation of mannose-
coated pits

ம. Dynamin is a large GTP-binding accessory protein that aids in the release of
the clathrin-coated vesicle from the membrane

A:-All the statements are true
B:-A and D are true
C:-B and C are true
D:-C and D are true
Correct Answer:- Option-B
Question36:-Which of the following describes the effective dose of the drug?
A:-The dose required to kill 50% of the tested animals

B:-The dose at which all the tested animals exhibit a biological response