Which of the following enzymes is/are released in stomach for protein digestion?1.Chymotrypsin2.Trypsin3.PepsinSelect the correct answer from the code given below:

1. A

   Only 1 and 2

   Only 1 and 2. Trypsin and chymotrypsin are pancreatic, not gastric.

2. B

   Only 3

   Only 3. Pepsin is the stomach’s protein-digesting enzyme. Trypsin and chymotrypsin come from the pancreas into the duodenum.

3. C

   Only 2 and 3

   Only 2 and 3. Trypsin is not released in the stomach.

4. D

   1, 2 and 3

   1, 2 and 3. Two of the three are not gastric.

Summary. Official key is (b) only 3. Stomach protein enzyme: pepsin. Trypsin and chymotrypsin are pancreatic.