ANATOMY

Detailed explanation-1: -The stomach empties the chyme containing the partially digested protein into the small intestine, where the majority of protein digestion occurs. 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: -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-4: -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 .

Detailed explanation-5: -Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.