All of the Following Are Part of the Process of Protein

Multiple Choice

All of the following are part of the process of protein digestion EXCEPT

A) denaturation of many proteins at the pH of gastric juice.
B) the action of enteropeptidase (enterokinase) on pro-aminopeptidase.
C) conversion of pepsinogen to pepsin by the action of pepsinogen.
D) catalysis of protein hydrolysis by both endo- and exopeptidases.
E) the action of specific dipeptidases.