HUMAN NUTRITION

Detailed explanation-1: -The pancreas secretes digestive juice that contains proteases (enzymes) that break down polypeptides into smaller peptides or single amino acids.

Detailed explanation-2: -The digestion of protein starts in the stomach, where HCl and pepsin break proteins into smaller polypeptides, which then travel to the small intestine.

Detailed explanation-3: -Proteins are first digested in the stomach by the action of pepsin which is secreted by peptic or chief cells as proenzyme pepsinogen and it converts proteins into smaller polypeptides.

Detailed explanation-4: -Of these five components, pepsin is the principal enzyme involved in protein digestion. It breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine.

Detailed explanation-5: -3 – Protein digestion and absorption in the small intestine The pancreas secretes digestive juices into the small intestine, and these contain more enzymes to further break down polypeptides. The two major pancreatic enzymes that digest proteins in the small intestine are chymotrypsin and trypsin .