The correct inorganic contact of enzyme nitrogenase is

Options

A. Mo-Fe protein
B. Mo-Mn protein
C. Mn-Fe protein
D. Cu-Fe protein

Answer

To solve the question regarding the correct inorganic content of the enzyme nitrogenase, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Nitrogenase**:
- Nitrogenase is an enzyme that plays a crucial role in the nitrogen fixation process, which is essential for converting atmospheric nitrogen (N₂) into ammonia (NH₃) that plants can utilize.

2. **Identifying Organisms**:
- Nitrogenase is primarily found in prokaryotic organisms, such as certain bacteria (e.g., Rhizobium and Nostoc), which are capable of fixing nitrogen.

3. **Analyzing Options**:
- The question provides four options regarding the inorganic components of nitrogenase:
- A) Molybdenum iron protein
- B) Molybdenum or manganese protein
- C) Manganese or iron protein
- D) Copper and iron protein

4. **Researching Inorganic Components**:
- The enzyme nitrogenase is known to contain specific metal cofactors that are essential for its activity. The most common inorganic components associated with nitrogenase are molybdenum (Mo) and iron (Fe).

5. **Selecting the Correct Option**:
- Based on the known composition of nitrogenase, the correct answer is:
- **A) Molybdenum iron protein**.

### Final Answer:
The correct inorganic content of the enzyme nitrogenase is **molybdenum iron protein** (Option A).

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