5) Explain the digestion of protein in Duodenum.                                                                                                       

Dear Student,

The digestion of protein takes place in the stomach and small intestine. 
The gastric glands present in the stomach secretes a digestive juice known as gastric juice. The partially digested food known as chyme is mixed with the hydrochloric acid, a component of the gastric juice and becomes acidic.
The food then enters into the duodenum through pyloric sphincter. The mucus secreted by the duodenum is of alkaline nature which contains a high concentration of bicarbonate ions. Then, the alkaline food gets mixed with the bile and pancreas start secreting pancreatic juices and proteases. Pancreatic juice contains various enzymes such as chymotrypsinogen, carboxypeptidase, trypsinogen, etc. These enzymes are involved in the breakdown of proteins, carbohydrates, and fats present in the partially digested food.



Trypsin cleaves the peptide chains pressent in the aminoacids of proteins, resulting in the digestion of proteins.

Regards 

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