A component of ferrodoxin is:

Options

A. S
B. Mg
C. Zn
D. Mn

Answer

To determine a component of ferredoxin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ferredoxin**:
- Ferredoxin is a type of iron-sulfur protein that plays a crucial role in electron transfer in various biological processes, particularly in photosynthesis and nitrogen fixation.

2. **Identifying Components**:
- The question lists several elements: Sulfur, Magnesium, Zinc, and Manganese. We need to identify which of these is a component of ferredoxin.

3. **Analyzing Each Element**:
- **Sulfur**: Known to be a component of ferredoxin. It is essential for the structure of certain proteins and coenzymes.
- **Magnesium**: While it is important for many biological functions and is a component of chlorophyll, it is not a direct component of ferredoxin.
- **Zinc**: This is classified as a micronutrient and is not a component of ferredoxin.
- **Manganese**: Also a micronutrient, it plays roles in various enzymatic reactions but is not a component of ferredoxin.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Sulfur**. It is a key component of ferredoxin, while Magnesium, Zinc, and Manganese do not serve this role.

### Final Answer:
A component of ferredoxin is **Sulfur**.

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