Pepsin and trypsin both are protein digesting enzymes. Pepsin acts in__medium and trypsin in medium.

Explanation

To answer the question regarding the mediums in which pepsin and trypsin act, we can break down the information as follows:

### Step-by-Step Solution:

1. **Identify the Enzymes**: Recognize that both pepsin and trypsin are proteolytic enzymes, meaning they are involved in the digestion of proteins.

2. **Location of Action**:
- **Pepsin**: Understand that pepsin is secreted in the stomach. This is crucial because the environment of the stomach is highly acidic.
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