Question

If the stomach does not produce HCl, which enzyme will not function?

• A. Ptyalin
• B. Trypsin
• C. Pepsin
• D. Amylase

Answer 1

The correct option is C Pepsin

HCl converts inactive pepsinogen and pro-renin into active pepsin and renin respectively. If the stomach does not produce HCl pepsin will not function.

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

Ptyalin is an enzyme found in the saliva of humans and herbivorous animals that helps in the pre digestion of starches.

Trypsin is an enzyme that acts to degrade protein; it is often referred to as a proteolytic enzyme, or proteinase. Trypsin is one of the three principal digestive proteinases, the other two being pepsin and chymotrypsin. In the digestive process, trypsin acts with the other proteases to break down dietary protein molecules to their component peptides and amino acids.

Amylase is an enzyme that catalyses 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.

Therefore, the correct answer is option C.