Aerobic glycolysis is _______ times efficient than anaerobic glycolysis

Options

A. 2 times
B. 4 time
C. 10 times
D. 18 times

Answer

To solve the question "Aerobic glycolysis is _______ times efficient than anaerobic glycolysis," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Processes**:
- **Anaerobic Glycolysis**: This process occurs without oxygen and involves glycolysis followed by fermentation. It produces either lactic acid (in animals) or ethanol and carbon dioxide (in yeast).
- **Aerobic Glycolysis**: This process occurs in the presence of oxygen and includes glycolysis, the Krebs cycle (also known as the citric acid cycle), and the electron transport chain (ETC).

2. **Energy Yield Comparison**:
- **Anaerobic Glycolysis**: Produces a net gain of 2 ATP molecules per glucose molecule.
- **Aerobic Glycolysis**: Produces a net gain of 36 ATP molecules per glucose molecule.

3. **Calculate Efficiency Ratio**:
- To find out how many times more efficient aerobic glycolysis is compared to anaerobic glycolysis, we can set up a ratio of the ATP yields:
- Ratio = ATP produced by Aerobic Glycolysis / ATP produced by Anaerobic Glycolysis
- Ratio = 36 ATP (aerobic) / 2 ATP (anaerobic)

4. **Perform the Calculation**:
- Ratio = 36 / 2 = 18

5. **Conclusion**:
- Therefore, aerobic glycolysis is 18 times more efficient than anaerobic glycolysis.

### Final Answer:
Aerobic glycolysis is **18** times efficient than anaerobic glycolysis.

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