Final product of ETS of mitochondria is

Options

A. `H_(2)O`
B. `H^(+)`
C. Electrons
D. All the above

Answer

To answer the question about the final product of the Electron Transport System (ETS) in mitochondria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding ETS**: The Electron Transport System (ETS) is a series of protein complexes located in the inner membrane of the mitochondria. It plays a crucial role in cellular respiration by facilitating the transfer of electrons.

**Hint**: Remember that ETS is also known as the electron transport chain.

2. **Electron Transfer**: During the ETS, electrons are transferred from electron carriers like NADH and FADH2 to oxygen. This process involves a series of redox reactions where electrons move through various protein complexes.

**Hint**: Focus on the role of NADH and FADH2 in donating electrons to the ETS.

3. **Role of Oxygen**: Oxygen acts as the final electron acceptor in the ETS. When electrons are transferred to oxygen, it combines with protons (H+) to form water (H2O).

**Hint**: Consider why oxygen is essential for aerobic respiration and what happens when it accepts electrons.

4. **Final Products**: The primary final product of the ETS is water (H2O). Although protons (H+) and electrons are involved in the process, they are not the final products; rather, they are intermediates in the electron transport chain.

**Hint**: Think about what happens to the electrons and protons at the end of the electron transport chain.

5. **Conclusion**: Based on the above steps, the final product of the ETS in mitochondria is water (H2O).

**Hint**: Review the options provided to confirm that H2O is the correct answer.

### Final Answer:
The final product of the Electron Transport System (ETS) of mitochondria is **H2O (water)**.