How many ATP molecules are released from one `FADH_(2)` molecule

Answer

**Step-by-Step Solution:**

1. **Understanding FADH2 Production**: FADH2 is produced during cellular respiration, specifically in the Krebs cycle (also known as the citric acid cycle). It is one of the electron carriers that transport electrons to the electron transport chain.

2. **Role of FADH2 in the Electron Transport Chain**: In the electron transport chain, FADH2 donates electrons, which are used to create a proton gradient across the inner mitochondrial membrane. This gradient is essential for ATP production.

3. **ATP Yield from FADH2**: When FADH2 is oxidized in the electron transport chain, it results in the production of ATP. Specifically, each molecule of FADH2 leads to the synthesis of 2 ATP molecules.

4. **Conclusion**: Therefore, from one molecule of FADH2, a total of 2 ATP molecules are released.

**Final Answer**: 2 ATP molecules are released from one FADH2 molecule.

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