During fixation of 2 molecules of nitrogen (N2), how many ATP and how many ammonia will be required and produced respectively?

Options

A. 32 and 2
B. 16 and 2
C. 32 and 4
D. 64 and 8

Answer

To solve the question regarding the fixation of 2 molecules of nitrogen (N2), we need to analyze the process step by step.

### Step-by-Step Solution:

1. **Understanding Nitrogen Fixation**:
- Nitrogen fixation is the process by which nitrogen gas (N2) is converted into ammonia (NH3). This process is crucial for making nitrogen available to living organisms.

2. **Nitrogen Fixation Requirements**:
- For the fixation of one molecule of nitrogen (N2), it is known that:
- **16 ATP** are required.
- **2 molecules of ammonia (NH3)** are produced.

3. **Calculating for Two Molecules of Nitrogen**:
- Since we are looking at the fixation of **2 molecules of nitrogen (N2)**, we need to double the requirements and the products:
- **ATP Required**:
- For 1 N2: 16 ATP
- For 2 N2: \( 16 \text{ ATP} \times 2 = 32 \text{ ATP} \)
- **Ammonia Produced**:
- For 1 N2: 2 NH3
- For 2 N2: \( 2 \text{ NH3} \times 2 = 4 \text{ NH3} \)

4. **Final Answer**:
- Therefore, during the fixation of 2 molecules of nitrogen, **32 ATP** are required and **4 ammonia** (NH3) are produced.

### Summary:
- **ATP Required**: 32
- **Ammonia Produced**: 4