Question

Protein digesting enzyme is

• A. Pepsin
• B. Ptyalin
• C. Amylase
• D. Maltase
• E. Sucrase

Answer 1

The correct option is A Pepsin

1. Pepsin is produced in the stomach and is one of the main digestive enzymes, which helps in digestion of the proteins in food. Zymogenic cell or peptic cell is a cell in the stomach that releases pepsinogen and chymosin.
2. The inactive pepsinogen, on exposure to hydrochloric acid, gets converted to the active enzyme pepsin, the proteolytic enzyme of the stomach. Pepsin converts proteins into proteoses and peptones (peptides).
3. Pepsin hydrolyses proteins to polypeptide chains and initiates protein digestion Hence, the protein-digesting enzyme is pepsin.
   

So, the correct answer is 'pepsin'.