Question

During the process of digestion, the protein present in food materials is hydrolyzed to amino acids. The two enzymes involved in the process are:
Proteins $\underset{}{\overset{Enzyme\left(A\right)}{\to }}$ Polypeptides $\underset{}{\overset{Enzyme\left(B\right)}{\to }}$ Amino acids

• A. Invertase and zymase
• B. Amylase and maltase
• C. Diastase and lipase
• D. Pepsin and trypsin

Answer 1

The correct option is D Pepsin and trypsin

Pepsin is an enzyme whose zymogen (pepsinogen) is released by the chief cells in the stomach and that degrades food proteins into peptides.

Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine. In the Duodenum, trypsin catalyzes the hydrolysis

of peptide bonds, breaking down proteins into smaller peptides. The peptide products are then further hydrolyzed into amino acids via other proteases, rendering them available for absorption into the blood stream. Tryptic digestion is a necessary step in protein absorption as proteins are generally too large to be absorbed through the lining of the small intestine.

Hence, option D is correct.