Where does the digestion of proteins begin and end?
A) begins in stomach; ends in pancreas
B) begins in pancreas; ends in small intestine
C) begins in stomach; ends in small intestine
D) begins in small intestine; ends in liver
E) begins in small intestine; ends in stomach

Question

Quizplus · Accepted Answer

The digestion of proteins begins in the stomach, where hydrochloric acid and the enzyme pepsin break down the protein molecules into smaller peptide fragments. The process then continues in the small intestine, where the pancreatic enzyme trypsin and other enzymes further break down the peptides into individual amino acids, which can be absorbed into the bloodstream through the lining of the small intestine. Therefore, option C is the most appropriate choice as it accurately describes the process of protein digestion.

Where Does the Digestion of Proteins Begin and End