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Digestion and Absorption
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Which of the following statements regarding the digestion of proteins in allimentary canal is INCORRECT?
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A
Pepsin is an exopeptidase.
💡 Explanation:
Pepsin (in gastric juice) digests proteins to peptides, 6-12 amino acids long. Pepsin is an endopeptidase, which means it hydrolyses peptide bonds in the middle of a polypeptide chain. It is unusual in that it has an optimum pH of about 2 and stops working at neutral pH.