Select the wrong statement

Options

A. RQ is 0.7 with tripalmitin
B. Link compound between glycolysis and Krebs cycle is malic acid
C. 36 ATP molecules are produced per glucose molecule in aerobic respiration
D. 2 ATP molecules are produced per glucose molecule in anaerobic respiration

Answer

To solve the question of selecting the wrong statement, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement 1: RQ is 0.7 with tripalmitin.**
- The respiratory quotient (RQ) is a measure of the ratio of carbon dioxide produced to oxygen consumed during respiration. For fatty acids, such as tripalmitin, the RQ is indeed approximately 0.7.
- **Conclusion:** This statement is **correct**.

2. **Statement 2: The link compound between glycolysis and Krebs cycle is malic acid.**
- In glycolysis, glucose is converted into pyruvate. The pyruvate then undergoes oxidative decarboxylation to form acetyl-CoA, which is the actual link compound that enters the Krebs cycle. Malic acid is an intermediate in the Krebs cycle, not the link compound.
- **Conclusion:** This statement is **incorrect**.

3. **Statement 3: 36 ATP molecules are produced per glucose molecule in aerobic respiration.**
- During aerobic respiration, the complete oxidation of one glucose molecule can yield up to 36 ATP molecules, accounting for glycolysis, the Krebs cycle, and oxidative phosphorylation.
- **Conclusion:** This statement is **correct**.

4. **Statement 4: 2 ATP molecules are produced per glucose molecule in anaerobic respiration.**
- In anaerobic respiration (fermentation), the breakdown of glucose yields a net gain of 2 ATP molecules.
- **Conclusion:** This statement is **correct**.

### Final Conclusion:
The wrong statement among the options provided is **Statement 2**, which incorrectly identifies malic acid as the link compound between glycolysis and the Krebs cycle.

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