Which of the following is correctly related to aerobic respiration ?

Options

A. Oxygen acts as the first electron acceptor.
B. Cytochrome c located towards inner side ( matrix ) of inner mitochondrial membrane .
C. Oxidation of 1 molecule of NADH gives rise to 2 molecules of ATP.
D. The role of oxygen is limited to the terminal stage of the process .

Answer

To solve the question "Which of the following is correctly related to aerobic respiration?", we will analyze each option provided and determine which one accurately describes a characteristic of aerobic respiration.

### Step-by-Step Solution:

1. **Understanding Aerobic Respiration**:
- Aerobic respiration is a metabolic process that requires oxygen to produce energy. It involves several stages, including glycolysis, the Krebs cycle, and the electron transport chain.

2. **Analyzing Each Option**:
- **Option 1**: "Oxygen acts as the final electron acceptor."
- This statement is **correct**. In aerobic respiration, oxygen is indeed the final electron acceptor in the electron transport chain, allowing for the production of water and ATP.

- **Option 2**: "Cytochrome C located towards inner side which is matrix of the inner mitochondrial membrane."
- This statement is **incorrect**. Cytochrome C is located in the intermembrane space of the mitochondria, not in the matrix.

- **Option 3**: "Oxidation of one molecule of NADH gives rise to the two molecules of ATP."
- This statement is **incorrect**. The oxidation of one molecule of NADH typically results in the production of approximately 2.5 ATP molecules during oxidative phosphorylation.

- **Option 4**: "The role of the oxygen is limited to the terminal stage of the process."
- This statement is **partially correct** but misleading. While oxygen is primarily involved in the terminal stage of the electron transport chain, it is essential for the entire process of aerobic respiration as it enables the complete oxidation of glucose.

3. **Conclusion**:
- The only option that is correctly related to aerobic respiration is **Option 1**: "Oxygen acts as the final electron acceptor."

### Final Answer:
**Option 1: Oxygen acts as the final electron acceptor.**

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