Question

31. In the digestive system, some protease enzymes must be secreted as an inactive form and then activated later by proteolytic cleavage once outside of the secreting cell to prevent active proteases from damaging the secreting cells. What is the category of precursor proteins of this type?

Select one:

a. glycosides

b. zymogens

c. ubiquitins

d. activins

Answer 1

The correct option is B. Zymogens are the Proenzymes which are trnasformed into active enzymes by cleavage of the peptide bonds of Zymogen molecule. Examples include Trypsinogen and Chymotrypsinogen secreted by Pancreas activated in the intestinal tract into Trypsin and Chymotrypsin.