is not an effect of GH.

Correct Answer: D

Rationale: GH increases protein synthesis, not decreases it.

Correct Answer: D

Rationale: β cells of the pancreas do not require insulin for glucose entry; they use GLUT2 transporters independently. Other tissues listed rely on insulin via GLUT4.

Correct Answer: A

Rationale: Most Ca2+ (~65%) is reabsorbed in the PCT passively, with further regulated reabsorption in the DCT.

Correct Answer: C

Rationale: The anterior pituitary produces 5 trophic hormones: TSH, ACTH, FSH, LH, and GH (PRL is sometimes included but not always trophic).

Correct Answer: B

Rationale: Vitamin C is water-soluble, unlike the fat-soluble vitamins A, D, E, and K.