Question

why stomach produce hydrochloric acid​

Answer 1

Answer:

The gastric chief cells of the stomach secrete enzymes for protein breakdown (inactive pepsinogen, and in infancy rennin).

Hydrochloric acid activates pepsinogen into the enzyme pepsin, which then aids digestion by breaking the amino acid bonds, a process called proteolysis.

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Answer 2

Answer:

the particles of food we eat which are big enough and are not masticated properly in the mouth are made very small by the action of HCl , as if we increase the surface area of the food particles it becomes easy to digest them.