Right. Trypsin and chymotrypsin break peptide bonds adjacent to certain amino acids. Carboxypeptidase and aminopeptidase break off one amino acid at a time, starting at the ends of a polypeptide. Dipeptidases attached to the intestinal lining help out too. Eventually polypeptides are completely broken down into individual amino acids, which are transported through the walls of the small intestine into the blood.