AP BIOLOGY

Detailed explanation-1: -Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen.

Detailed explanation-2: -Types of Digestive Enzymes Amylase (made in the mouth and pancreas; breaks down complex carbohydrates) Lipase (made in the pancreas; breaks down fats) Protease (made in the pancreas; breaks down proteins)

Detailed explanation-3: -Pepsin is an endopeptidase that initiates the process of protein digestion in the stomach. Pepsin action results in the release of small peptides and amino acids (peptones) that, as noted above, stimulate the release of gastrin from antral G cells; these peptones also stimulate CCK release from duodenal I cells.

Detailed explanation-4: -An enzyme made in the stomach that breaks down proteins in food during digestion.

Detailed explanation-5: -Enzymatic digestion of proteins begins in the stomach with the action of the enzyme pepsin. Proteins are large globular molecules, and their chemical breakdown requires time and mixing. Protein digestion in the stomach takes a longer time than carbohydrate digestion, but a shorter time than fat digestion.