Which of the following is the carbonic anhydrase ?

Options

A. Fe
B. Zn
C. Cu
D. Mg

Answer

To solve the question "Which of the following is the carbonic anhydrase?", we will analyze the options provided and identify the correct one.

### Step-by-Step Solution:

1. **Understanding Carbonic Anhydrase**:
- Carbonic anhydrase is an enzyme found in red blood cells that catalyzes the conversion of carbon dioxide (CO2) and water (H2O) into carbonic acid (H2CO3), which can dissociate into bicarbonate (HCO3-) and protons (H+). This reaction is crucial for maintaining acid-base balance in the body.

2. **Analyzing the Options**:
- We need to evaluate each option provided to determine which one is associated with carbonic anhydrase.

3. **Option 1 - Farris**:
- The mention of "Farris" seems to be a misunderstanding or miscommunication. It is not a recognized component of carbonic anhydrase. Instead, hemoglobin, which contains iron (not Farris), is responsible for oxygen transport. Thus, this option is incorrect.

4. **Option 2 - Zinc**:
- Zinc is a crucial component of carbonic anhydrase. It serves as the active site for the enzyme, facilitating the conversion of CO2 to bicarbonate. Therefore, this option is correct.

5. **Option 3 - Copper**:
- Copper is not involved in the function of carbonic anhydrase. Instead, it plays a role in the synthesis of hemoglobin. Hence, this option is incorrect.

6. **Option 4 - Magnesium**:
- Magnesium is important for various cellular functions, including maintaining cell wall stability, but it is not a component of carbonic anhydrase. Thus, this option is also incorrect.

7. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2 - Zinc**.

### Final Answer:
The correct answer is **Zinc**.

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