Which class of hormones triggers the synthesis of new intracellular proteins within the target cell?

Correct Answer: D

Rationale: Steroids and thyroid hormone act via nuclear receptors to induce protein synthesis.

Correct Answer: A

Rationale: Vasopressin is a hypothalamic neurohormone released by the posterior pituitary.

Correct Answer: D

Rationale: Hypothalamic hormones and target gland feedback regulate anterior pituitary secretion.

Correct Answer: D

Rationale: Vasopressin regulates water balance, not reproduction.

Correct Answer: A

Rationale: GH primarily acts via IGFs to promote growth.