Activation of pro-carboxypeptidase into carboxypeptidase is brought about by

Options

A. Enterokinase
B. Endopeptidase
C. Exopeptidase
D. Trypsin

Answer

To solve the question regarding the activation of pro-carboxypeptidase into carboxypeptidase, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pro-Carboxypeptidase**:
- Pro-carboxypeptidase is an inactive precursor (zymogen) of the enzyme carboxypeptidase. It is secreted by the pancreas.

2. **Activation Process**:
- The conversion of pro-carboxypeptidase to its active form, carboxypeptidase, requires the action of another enzyme.

3. **Identifying the Activating Enzyme**:
- The enzyme responsible for activating pro-carboxypeptidase is trypsin.
- Trypsin itself is also secreted in an inactive form called trypsinogen, which is activated by enterokinase.

4. **Conclusion**:
- Therefore, the correct answer to the question "Activation of pro-carboxypeptidase into carboxypeptidase is brought about by" is **trypsin**.

### Final Answer:
The activation of pro-carboxypeptidase into carboxypeptidase is brought about by **trypsin**.

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