Prosthetic groups are organic compounds and are tightly bound to the apoenzyme. Haem is the prosthetic group of :-

Options

A. Peroxidase
B. Catalase
C. Carboxypeptidase
D. (1) and (2) both

Answer

To answer the question regarding the prosthetic group that is associated with hemoglobin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Prosthetic Groups**: These are non-polypeptide units that are tightly and permanently attached to proteins (apoenzymes) and are essential for their biological activity.
- **Apoenzyme**: This is the protein part of an enzyme that requires a prosthetic group to be active.

2. **Identifying the Prosthetic Group**:
- The question specifically asks about the prosthetic group of hemoglobin. Hemoglobin is a protein responsible for transporting oxygen in the blood.

3. **Recognizing the Prosthetic Group of Hemoglobin**:
- The prosthetic group of hemoglobin is **heme**. Heme is an iron-containing compound that binds oxygen and is crucial for the function of hemoglobin.

4. **Other Examples**:
- It’s also important to note that other proteins, such as myoglobin, peroxidase, and catalase, also contain heme as their prosthetic group. This highlights the significance of heme in various biological processes.

5. **Conclusion**:
- Therefore, we conclude that the prosthetic group of hemoglobin is **heme**.

### Final Answer:
The prosthetic group of hemoglobin is **heme**.

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