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✏Explain the digestion of proteins in human body?
■ Biology class 11th
Answers
Explanation:
Protein digestion occurs in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.
digestion
the process of conversion of complex food substances to simple absorbable forms is called digestion and it is carried out by our digestive system by mechanical and biochemical methods.
digestion of proteins
The digestion of protein starts in stomach and completes in small intestine.
In stomach, active pepsin is formed by the action of HCl on inactive pepsinogen converts proteins into proteases and peptones.
In small intestine, the pancreatic juice contains inactive enzymes – trypsinogen, chymotrypsinogen and procarboxypeptidases in the inactive form. Trypsinogen is activated by an enzyme, enterokinase, secreted by the intestinal mucosa into active trypsin, which in turn activates the other enzymes in the pancreatic juice. Chymotrypsinogen and procarboxypeptidases get converted into chymotrypsin and carboxypeptidase in the presence of trypsin. Chymotrypsin converts the proteins into peptides, and carboxypeptidase further converts peptides into smaller peptide chains and amino acids.
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