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15. What is digestion? Briefly describe digestion of proteins in the stomach? |
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Answer» Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. Protein digestion.Protein digestionoccursin thestomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down foodproteinsinto polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids. |
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