Which of the following are enzymes that break down proteins?

• A. Amylase
• B. Lipase
• C. Pepsin
• D. Lactase

Answer: (C)

Verified step by step guidance

1. Understand that enzymes are biological catalysts that speed up chemical reactions in the body, each specific to a particular substrate.
2. Recognize that proteins are large, complex molecules that need to be broken down into smaller peptides or amino acids for absorption.
3. Identify that enzymes that break down proteins are known as proteases or peptidases.
4. Review the list of enzymes provided: Amylase, Lipase, Pepsin, and Lactase.
5. Determine that Pepsin is the enzyme from the list that specifically breaks down proteins into smaller peptides in the stomach.