Question

Which one is not a protein-digesting enzyme?

• A. Lactase
• B. Pepsin
• C. Chymotrypsin
• D. Trypsin

Answer 1

The correct option is A

Lactase

The correct option is A.

Explanation of correct option:

1. Lactase is a special kind of sugar-breaking enzyme.
2. It is produced by the inner lining of cells within the small intestine.
3. It is known to break and digest lactose which is a sugar specific to milk and all dairy products.

Explanation of incorrect options:

Option (B):

Pepsin is released in the stomach for the initial breakdown of the proteins in our food.

Option (C):

Chymotrypsin is a protein degrading enzyme that is released by the pancreas within the small intestine to digest proteins.

Option (D):

Trypsin is also formed within the pancreas and released along with chymotrypsin into the small intestine for breaking down proteins in the food.

Final answer: Lactase is not a protein-digesting enzyme.