Which of the following enzymes is stable at acidic pH:: (A) Pepsin, (B) Trypsin, (C) Chymotrypsin, (D) Carboxypeptidase
Answer is A. Ans. A. PepsinPepsin is formed when pepsinogen is activated by hydrochloric acid in the stomach. The optimum pH for pepsin action is 1.6 to 3.2.