About pepsins:
A)There are 5 types of exopeptidase enzymes.
B)They are secreted by endocytosis as active enzymes.
C)They are incapable of autoactivation
D)Their optimum pH of action is 1.6- 3.2.

Question

Quizplus · Accepted Answer

Pepsins are a group of proteolytic enzymes that work optimally in the acidic environment of the stomach, with an optimum pH range of 1.6 to 3.2. They are not exopeptidases (which cleave amino acids from the ends of peptides) but are endopeptidases, breaking peptide bonds within the chain. They are secreted as inactive precursors called pepsinogens, which are activated to pepsins in the acidic environment of the stomach, demonstrating their capability for autoactivation.

About Pepsins