Electron Transport system (ETS) is located in mitochondrial

Options

A. outer membrane
B. inter membrane space
C. inner membrane
D. matrix

Explanation

**Step-by-Step Solution:**

1. **Understanding the Structure of Mitochondria:**
- Mitochondria are double-membraned organelles consisting of an outer membrane, an inner membrane, and an intermembrane space between them.

2. **Identifying the Location of the Electron Transport System (ETS):**
- The Electron Transport System (ETS) is a series of protein complexes and other molecules that transfer electrons from electron donors to electron acceptors via redox reactions.

3. **Role of the Inner Membrane:**
- The ETS is located in the inner membrane of the mitochondria. This is where the electron carriers, such as NADH and FADH2, donate electrons.

4. **Function of the ETS:**
- As electrons are transferred through the ETS, protons (H⁺ ions) are pumped from the mitochondrial matrix into the intermembrane space, creating a proton gradient.

5. **ATP Formation:**
- The energy from the proton gradient is used to convert ADP and inorganic phosphate into ATP through a process called oxidative phosphorylation, which occurs in the matrix.

6. **Final Conclusion:**
- Therefore, the Electron Transport System (ETS) is located in the inner membrane of the mitochondria.

**Final Answer:**
The Electron Transport System (ETS) is located in the **inner membrane** of the mitochondria.

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