Select the correct products of Krebs cycle with respect to the complete breakdown of two acetyl - CoA molecules

Options

A. `6NADH_2,2FADH_2,2GTP`
B. `3NADH_2,1FADH_2,1GTP`
C. `8NADH_2,2FADH_2,2GTP`
D. `6NADH_2,1FADH_2,2GTP`

Answer

To solve the question regarding the products of the Krebs cycle from the complete breakdown of two acetyl-CoA molecules, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Krebs Cycle**: The Krebs cycle (also known as the citric acid cycle or TCA cycle) begins with the condensation of acetyl-CoA with oxaloacetate to form citrate. Each turn of the cycle processes one acetyl-CoA molecule.

2. **Products from One Acetyl-CoA**: For each acetyl-CoA that enters the Krebs cycle, the following products are generated:
- 3 NADH
- 1 FADH2
- 1 GTP (or ATP)

3. **Calculating for Two Acetyl-CoA Molecules**: Since the question asks for the breakdown of **two** acetyl-CoA molecules, we need to multiply the products obtained from one acetyl-CoA by 2:
- NADH: 3 NADH × 2 = 6 NADH
- FADH2: 1 FADH2 × 2 = 2 FADH2
- GTP: 1 GTP × 2 = 2 GTP

4. **Final Product Summary**: Therefore, the complete breakdown of two acetyl-CoA molecules yields:
- 6 NADH
- 2 FADH2
- 2 GTP

5. **Selecting the Correct Option**: From the options provided in the question, the correct answer is:
- **6 NADH, 2 FADH2, 2 GTP**