Question

What is common among amylase rennin and trypsin?

• A. These are produced in stomach
• B. These act at a pH lower than $7$
• C. these all are proteins
• D. These all are proteolytic enzymes.

Answer 1

The correct option is C these all are proteins

Amylase, renin, and trypsin are three classes of enzymes. Being enzymes, all three of them are proteinaceous in nature. Also, both renin and trypsin have roles in the digestion of proteins. Renin is secreted by the gastric glands, while trypsin is secreted by the pancreas. Amylases are found in saliva and pancreatic juice and acts on carbohydrates.

So, the correct answer is 'these all are proteins'.