During Calvin cycle the total number of `CO_(2)` ATP and NADPH molecules utilised and glucose, ADP and NADP molecules generated is

Options

A. 31
B. 36
C. 61
D. 67

Answer

To solve the question about the Calvin cycle, we need to determine the total number of molecules of CO₂, ATP, and NADPH utilized, as well as the total number of glucose, ADP, and NADP molecules generated.

### Step-by-Step Solution:

1. **Identify the molecules utilized in the Calvin cycle:**
- **CO₂:** 6 molecules are utilized.
- **ATP:** 18 molecules are utilized.
- **NADPH:** 12 molecules are utilized.

2. **Identify the molecules generated in the Calvin cycle:**
- **Glucose:** 1 molecule is generated.
- **ADP:** 18 molecules are generated.
- **NADP:** 12 molecules are generated.

3. **Calculate the total number of molecules utilized:**
- Total utilized = CO₂ + ATP + NADPH
- Total utilized = 6 (CO₂) + 18 (ATP) + 12 (NADPH) = 36 molecules.

4. **Calculate the total number of molecules generated:**
- Total generated = Glucose + ADP + NADP
- Total generated = 1 (Glucose) + 18 (ADP) + 12 (NADP) = 31 molecules.

5. **Combine the total utilized and generated molecules:**
- Total = Total utilized + Total generated
- Total = 36 (utilized) + 31 (generated) = 67 molecules.

6. **Conclusion:**
- The total number of molecules (CO₂, ATP, NADPH utilized and glucose, ADP, NADP generated) is **67**.

### Final Answer:
The correct answer is **67**.

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