Chemical Digestion of Protein Begins in the ______ and Is

Question

Chemical digestion of protein begins in the ______ and is completed in the _______.
A) stomach, small intestine
B) small intestine, large intestine
C) small intestine, liver
D) stomach, large intestine

Accepted Answer

Chemical digestion of protein begins in the stomach with the help of the enzyme pepsin, which breaks down proteins into smaller peptide chains. This process continues in the small intestine with the help of enzymes released from the pancreas and the small intestine lining, which break down the peptide chains into amino acids. Therefore, the best answer is A, as chemical digestion of protein begins in the stomach and is completed in the small intestine.