The enzyme pepsin hydrolyses

Options

A. Fats to fatty acids
B. Proteins to `alpha`-amino acids
C. Starch to glucose
D. Glucose to ethyl alcohol

Answer

To solve the question regarding what the enzyme pepsin hydrolyzes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Enzyme**: The question asks about the enzyme pepsin. Pepsin is a digestive enzyme found in the stomach.

2. **Understand the Function of Pepsin**: Pepsin is primarily involved in the digestion of proteins. It is secreted in an inactive form called pepsinogen, which is activated in the acidic environment of the stomach.

3. **Determine the Substrate**: The options provided are:
- Fat to fatty acids
- Protein to alpha amino acids
- Starch to glucose
- Glucose to ethyl alcohol

4. **Analyze Each Option**:
- **Fat to fatty acids**: This process is primarily done by lipases, not pepsin.
- **Protein to alpha amino acids**: This is the primary function of pepsin, as it breaks down proteins into smaller peptides and eventually into amino acids.
- **Starch to glucose**: This is the role of amylase, not pepsin.
- **Glucose to ethyl alcohol**: This is a fermentation process, not related to pepsin.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is that pepsin hydrolyzes proteins to alpha amino acids.

### Final Answer:
The enzyme pepsin hydrolyzes proteins to alpha amino acids.

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