PCAT Biological Processes – Enzyme Digestion of Macronucrients
- Apr 19, 2018
- PCAT Question of the Day
Which of the following correctly matches the macronutrient with the location of digestion by digestive enzymes?
A. Disaccharides—small intestine
D. All of the above are correct.
Click for Explanation
A is correct. Disaccharides, including sucrose and lactose, are broken down in the small intestine by enzymes known as disaccharidases. The pancreas is the source of the zymogen form of trypsin, a protease, but proteins are not actually digested in the pancreas. Finally, starch is partially digested in the mouth by salivary amylase, but starch is a polysaccharide, not a disaccharide.
Search the Blog
Free ConsultationSchedule Now
MCAT Blog How to Review MCAT Full-Lengths
Free MCAT Practice AccountNeed great MCAT practice?
Get the most representative MCAT practice possible when you sign up for our free MCAT Account, which includes a half-length diagnostic exam and one of our full-length MCAT practice exams.Learn More