Answer :
Final answer:
The enzymatic breakdown of amino acids by trypsin and chymotrypsin in the small intestine serves the digestion of proteins, with the resulting amino acids used for protein synthesis in the body (c).
Explanation:
The primary purpose of the enzymatic breakdown of amino acids by pancreatic trypsin and chymotrypsin in the lumen of the small intestine is the digestion of proteins.
These enzymes are crucial in breaking down large protein molecules into smaller peptides and eventually into individual amino acids, which can then be absorbed across the intestinal wall into the circulatory system.
This process is facilitated by enzymes such as enteropeptidase that activate pancreatic enzymes, and other enzymes like aminopeptidase and carboxypeptidase that help in further hydrolyzing the peptides into free amino acids.
The amino acids are then transported to various parts of the body for protein synthesis and other metabolic processes.