Question

The enzyme that controls the hydrolysis of proteins into peptides is

• A. Amylase
• B. Niacin
• C. Trypsins
• D. Pepsin

Answer 1

The correct option is D Pepsin

The enzyme that controls the hydrolysis of proteins into peptides is pepsin.

Pepsin is an enzyme whose zymogen (pepsinogen) is released by the chief cells in the stomach and that degrades food proteins into peptides.

An amylase is an enzyme that catalyzes the hydrolysis of starch into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion.

Trypsin is a protein-digesting enzyme present in pancreatic juices secreted into your small intestine during a meal. Your pancreas secretes trypsin as an inactive proenzyme called trypsinogen. Once in the intestine, an enzyme called enteropeptidase, which is secreted from intestinal cells, cuts off a small piece of trypsinogen to produce the active trypsin enzyme. Activated trypsin, in turn, helps break down food proteins.

Having enough niacin, or vitamin B${}_3$, in the body is important for general good health. As a treatment, higher amounts of niacin can improve cholesterol levels and lower cardiovascular risks. Thus, the correct answer is option D.