Adrenocorticotropic hormone (ACTH) stimulates the ___ to produce and release its hormones.

Correct Answer: D

Rationale: ACTH targets the adrenal cortex to secrete glucocorticoids like cortisol.

Correct Answer: A

Rationale: Addison disease results from insufficient adrenal cortex hormones like cortisol and aldosterone.

Correct Answer: B

Rationale: Leptin, from fat cells, signals fullness to the brain to regulate appetite.

Correct Answer: A

Rationale: Peptide hormones bind to receptors on the plasma membrane due to their water solubility.

Correct Answer: D

Rationale: Growth hormone stimulates cell division, protein synthesis, and bone growth.