Mark the right statement among the following.

Options

A. Trypsinogen is an inactive enzyme
B. Trypsinogen is secreted by intestinal mucosa
C. Enterokinase is secreted by pancreas
D. Bile contains trypsin

Explanation

To solve the question of identifying the correct statement regarding trypsinogen and its role in digestion, we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Understanding Trypsinogen**:
- Trypsinogen is an enzyme that is produced in an inactive form. It is secreted by the pancreas into the small intestine.
- **Hint**: Remember that many digestive enzymes are secreted in inactive forms to prevent them from digesting the tissues that produce them.

2. **Activation of Trypsinogen**:
- Trypsinogen is activated into its active form, trypsin, by the enzyme enterokinase, which is secreted by the intestinal mucosa.
- **Hint**: Think about the location of enzyme activation and the role of enterokinase in this process.

3. **Evaluating the Statements**:
- **Statement 1**: "Trypsinogen is an inactive enzyme."
- This statement is correct.
- **Statement 2**: "Trypsinogen is secreted by the intestinal mucosa."
- This statement is incorrect; trypsinogen is secreted by the pancreas.
- **Statement 3**: "Enterokinase is secreted by the pancreas."
- This statement is incorrect; enterokinase is secreted by the intestinal mucosa.
- **Statement 4**: "Bile contains trypsin."
- This statement is incorrect; bile does not contain trypsin; it primarily contains bile salts and other substances for fat digestion.

4. **Conclusion**:
- The only correct statement is the first one: "Trypsinogen is an inactive enzyme."

### Final Answer:
The correct statement is: **"Trypsinogen is an inactive enzyme."**