Question

Stomach is the site of digestion mainly of

• A. Carbohydrate
• B. Fats
• C. Proteins
• D. All of these

Answer 1

The correct option is C

Proteins

The correct option is C.

Explanation of the correct option:

1. Stomach is a highly muscular elastic bag located below the diaphragm.
2. The inner linings of the stomach secrete gastric juice which contains the enzyme pepsin.
3. Oxyntic cells secreted by the epithelium lining of the stomach secrete HCl which activates pepsinogen into pepsin.
4. Pepsin digests proteins into peptides.
5. Another enzyme rennin found in the stomach acts on casein (milk protein) to convert it into paracaesin (insoluble peptide).

Final Answer: Stomach is the site of digestion mainly of proteins.