What is the job of a proteolytic enzyme? A. Proteolytic enzymes build protein. B. Proteolytic enzymes break down carbohydrates. C. Proteolytic enzymes break down fats. D. Proteolytic enzymes break down protein. E. Proteolytic enzymes break down polymers.

D. they break down proteins

Explanation:

A protease (also called a peptidase or proteinase) is an enzyme that catalyzes (increases the rate of) proteolysis, the breakdown of proteins into smaller polypeptides or single amino acids. They do this by cleaving the peptide bonds within proteins by hydrolysis, a reaction where water breaks bonds.