Which one is component of ferredoxin ?

Options

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

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for a component of ferredoxin. We need to identify which of the given options is a part of ferredoxin.

2. **Define Ferredoxin**: Ferredoxin is a group of small proteins found in the chloroplasts of plants. They play a crucial role in photosynthesis and electron transfer processes.

3. **Identify the Role of Ferredoxin**: Ferredoxins are involved in redox reactions, which include electron transfer during photosynthesis and respiration. They are sometimes referred to as biological capacitors due to their ability to accept and discharge electrons.

4. **Analyze the Composition of Ferredoxin**: Ferredoxins are primarily composed of clusters of iron and sulfur. This means that iron (Fe) is a significant component of ferredoxin.

5. **Evaluate the Options**: The options provided are:
- A) Zinc (Zn)
- B) Manganese (Mn)
- C) Copper (Cu)
- D) Iron (Fe)

From our analysis, we can see that:
- Zinc, manganese, and copper are not components of ferredoxin.
- Iron is indeed a component of ferredoxin.

6. **Conclusion**: The correct answer is D) Iron (Fe).