Which Statement About Protein Digestion in the Stomach and Intestines

Multiple Choice

Which statement about protein digestion in the stomach and intestines is FALSE?

A) Trypsin can activate all zymogens of pancreatic proteases.
B) pepsin is irreversibly inactivated when the pH is above 5.
C) Chymotrypsin and trypsin show similar specificity in catalyzing the hydrolysis of peptide bonds.
D) The action of pepsin in the stomach produces primarily peptide fragments of proteins.
E) Intestinal peptidases are required to digest di- and tri-peptides.