Aerobic respiration of glucose produces ATP . How many of them are produced during election transport system ?

Options

A. 32
B. 34
C. 28
D. 2

Answer

To solve the question regarding how many ATP molecules are produced during the Electron Transport System (ETS) in the aerobic respiration of glucose, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Aerobic Respiration**:
- Aerobic respiration of glucose involves several stages: Glycolysis, the Krebs cycle (Citric Acid Cycle), and the Electron Transport System (ETS).

2. **Total ATP Production**:
- In total, aerobic respiration of one molecule of glucose produces approximately 36 ATP molecules. This includes ATP generated from glycolysis, the Krebs cycle, and the ETS.

3. **ATP from Glycolysis**:
- During glycolysis, which occurs in the cytoplasm, a net gain of 2 ATP molecules is produced.

4. **ATP from Krebs Cycle**:
- The Krebs cycle produces additional ATP, but the majority of ATP is generated during the ETS.

5. **ATP from Electron Transport System**:
- The Electron Transport System is where the majority of ATP is produced. It is estimated that around 34 ATP molecules are generated during this phase of aerobic respiration.

6. **Conclusion**:
- Therefore, the number of ATP molecules produced during the Electron Transport System is 34.

### Final Answer:
The correct answer is **34 ATP**.

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