Number of ATP generated in ETS on oxidation of reduced Co-enzymes produced in cytosol for one glucose molecule is

Options

A. 4 ATP
B. 36 ATP
C. 32 ATP
D. 6 ATP

Answer

To solve the question regarding the number of ATP generated in the electron transport system (ETS) from the oxidation of reduced coenzymes produced in the cytosol for one glucose molecule, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Context**:
- The question asks about ATP production from reduced coenzymes that are generated in the cytosol during the process of glycolysis, specifically focusing on NADH.

2. **Identifying the Key Processes**:
- Glycolysis occurs in the cytosol and produces reduced coenzymes (NADH) that are then transported to the mitochondria for ATP production via the electron transport chain (ETS).

3. **NADH Production in Glycolysis**:
- In glycolysis, for each molecule of glucose, two molecules of NADH are produced. This occurs during the conversion of glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate.

4. **ATP Yield from NADH**:
- Each NADH molecule can yield approximately 2.5 to 3 ATP when oxidized in the ETS. For the sake of this calculation, we will use the common approximation of 3 ATP per NADH.

5. **Calculating Total ATP from NADH**:
- Since 2 NADH are produced from one glucose molecule, the total ATP generated from these NADH molecules can be calculated as follows:
\[ \text{Total ATP} = \text{Number of NADH} \times \text{ATP per NADH} = 2 \times 3 = 6 \text{ ATP} \]

6. **Conclusion**:
- Therefore, the total number of ATP generated in the electron transport chain from the oxidation of reduced coenzymes produced in the cytosol for one glucose molecule is **6 ATP**.

### Final Answer:
The correct answer is **6 ATP**.

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