Protein is digested in the
A) mouth and stomach.
B) stomach and small intestine.
C) small and large intestines.
D) large intestine.

Question

Quizplus · Accepted Answer

Protein digestion begins in the stomach, where hydrochloric acid denatures the proteins and pepsin breaks them down into smaller polypeptides. The partially digested food then passes into the small intestine, where pancreatic enzymes and enzymes produced by the cells lining the small intestine complete the breakdown of proteins into amino acids, which can be absorbed by the body. Therefore, protein is digested in both the stomach and the small intestine.

Protein Is Digested in the