MCAT Biology Question 134: Answer and Explanation
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Question: 134
14. Which of the following hormones increases feeding behavior?
- A. Leptin
- B. Cholecystokinin
- C. Ghrelin
- D. Gastrin
Correct Answer: C
Explanation:
Ghrelin promotes a sensation of hunger, increasing feeding behavior. Both leptin and cholecystokinin promote satiety, decreasing feeding behavior—eliminating choices (A) and (B). Gastrin increases acid production and gastric motility, but does not have any significant relationship with feeding behavior, eliminating choice (D).