Answer :
Final answer:
The enzymatic breakdown of amino acids by pancreatic trypsin and chymotrypsin allows for the absorption of nutrients, enabling amino acids to be used for protein synthesis throughout the body.
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 absorption of nutrients. This enzymatic action is crucial for the digestion of proteins into smaller peptides and ultimately their constituent amino acids. Trypsin and chymotrypsin, which are secreted by the pancreas as inactive proenzymes, are activated in the small intestine and facilitate the hydrolysis of peptide bonds in protein chains. This breakdown allows amino acids to be transported across the intestinal mucosa and absorbed into the bloodstream, where they can be used for protein synthesis in various tissues.