Oxidation of one `NADH` and one `FADH_(2)` respectively gives rise to_____and _____ATP molecules.

Options

A. 3 and 2
B. 2 and 1
C. 2 and 3
D. 1 and 1

Explanation

To solve the question regarding the oxidation of one NADH and one FADH2 and the corresponding ATP yield, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding NADH and FADH2**:
- NADH and FADH2 are electron carriers that play a crucial role in cellular respiration, particularly in the electron transport chain (ETC).

2. **ATP Yield from NADH**:
- When NADH is oxidized in the electron transport chain, it typically results in the production of 3 ATP molecules. This is due to the high energy electrons carried by NADH, which are used to pump protons across the mitochondrial membrane, creating a proton gradient that drives ATP synthesis.

3. **ATP Yield from FADH2**:
- In contrast, FADH2, when oxidized, yields 2 ATP molecules. This is because FADH2 donates its electrons to the electron transport chain at a point that is lower in the chain compared to NADH, resulting in less proton pumping and therefore less ATP production.

4. **Final Calculation**:
- Therefore, the oxidation of 1 NADH gives rise to 3 ATP molecules, and the oxidation of 1 FADH2 gives rise to 2 ATP molecules.

5. **Conclusion**:
- The final answer to the question is that the oxidation of one NADH and one FADH2 respectively gives rise to 3 ATP and 2 ATP molecules.

### Answer:
- The oxidation of one NADH yields 3 ATP molecules.
- The oxidation of one FADH2 yields 2 ATP molecules.