Zoology-Hormone Action Mechanism

NEET Zoology Hormone Action Mechanism Assertion Reason Question

Type: Assertion Reason-assertion-Hard-Class 11

Assertion (A): Hormones that bind to intracellular receptors typically influence gene expression or chromosome function. | Reason (R): Steroid hormones and iodothyronines interact with membrane-bound receptors to generate second messengers.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true but (R) is not the correct explanation of (A).

C

(A) is true but (R) is false.

D

(A) is false but (R) is true.

Correct Answer

Option C

Detailed Explanation

Hormones that bind to intracellular receptors, such as steroid hormones and iodothyronines, mainly regulate gene expression, not through membrane-bound receptors. The statement about second messengers is incorrect.

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