Question

What will happen to protein digestion as the medium of intestine is gradually rendered alkaline?

Answer 1

the protein digestion is partially completed in the stomach by the action of hcl and then converted to proteoses ans peptones. The partially digested protein enters the duodenum of the small intestine for the final digestion.

there it encounters with alkaline medium, hence pepsin is inactive here since it can be helpful only in the presence of acidic medium. trypsinogen is another inactive enzyme present in pancreatic juice. it is converted active trypsin in the presence of alkaline medium . the mucus layer and bicarbonate ions transforms the medium to alkaline when the food reaches the intestine.

peptones,proteose and all undigested proteins(if any) are converted to dipeptides. The dipeptides are finally converted to amino acids with the help of the enzyme dipeptidases from succus entericus or the intestinal juice.

Answer 2

$\huge{\underline{\red{\sf{Answer:}}}}$

1. The food coming from the stomach to intestine is acidic in nature.

2. Bile and pancreatic juices render the internal condition of the intestine gradually to a basic or alkaline one.

3. In the alkaline medium, pancreatic enzymes trypsin can act on the food and digests the proteins.

4. The enzymes present in the intestinal juice complete the digestion of proteins into amino acids.

5. Roughages are the fibers of carbohydrates or proteins.