Answer:
The correct option is: begins the hydrolysis of proteins in the stomach
Explanation:
Pepsin is a protease enzyme that is synthesized by the stomach. It is the main gastric enzyme that helps in the digestion of proteins molecules present in the food.
The pepsin enzyme catalyzes the acid hydrolysis of the peptide bond in the proteins at a very low acidic pH of 1.5-2.0.
This enzyme becomes inactive at pH 6.0 and gets fully denatured or irreversibly inactivated as the pH increases to 8.0.
