Identify a protein-digesting enzyme.

Correct option is D

The correct answer is (d) Pepsin.

• Pepsin is a proteolytic enzyme, meaning it breaks down proteins into smaller peptides.
• It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals.
• Pepsin is secreted by the gastric chief cells in an inactive form called pepsinogen, which is then activated to pepsin in the acidic environment of the stomach.
• The primary function of pepsin is to digest dietary proteins into peptides, which can then be further broken down by other proteases in the small intestine.

Information Booster:

Lipase:

• Lipase is an enzyme that breaks down fats into fatty acids and glycerol.
• It is secreted by the pancreas and plays a key role in the digestion and absorption of dietary lipids.

Amylase:

• Amylase is an enzyme that breaks down starch into sugars.
• It is produced in the salivary glands and the pancreas and is important for the digestion of carbohydrates.

Collagen:

• Collagen is not an enzyme but a structural protein found in connective tissues throughout the body.
• It provides strength and elasticity to skin, bones, tendons, and ligaments.
• It does not play a role in digestion.