MCAT Biology Question 124: Answer and Explanation
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Question: 124
4. Which of the following INCORRECTLY pairs a digestive hormone with its function?
- A. Trypsin—hydrolyzes specific peptide bonds
- B. Lactase—hydrolyzes lactose to glucose and galactose
- C. Pancreatic amylase—hydrolyzes starch to maltose
- D. Lipase—emulsifies fats
Correct Answer: D
Explanation:
Lipase is involved in the digestion of fats, but its function is not to emulsify fats—this is the job of bile. Rather, lipase chemically digests fats in the duodenum, allowing them to be brought into duodenal cells and packaged into chylomicrons. The other associations given here are all correct.