Select the wrong statement

Options

A. When tripalmitin is used as a substrate in respiration, the R.Q. is 0.7
B. The intermediate compound which links glycolysis with Krebs' cycle is malic acid
C. One glucose molecule yields a net gain of 36ATP
D. One glucose molecule yields a net gain of 2ATP molecules during glycolysis

Answer

To solve the question of selecting the wrong statement regarding respiration in plants, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding RQ (Respiratory Quotient)**:
- The first statement mentions that when triglycerides (often referred to as fats) are used as substrates in respiration, the RQ is 0.7. This is a true statement because the RQ for fats is indeed around 0.7, indicating that less oxygen is consumed compared to the amount of carbon dioxide produced.

**Hint**: Remember that RQ values vary for different substrates; fats typically have a lower RQ than carbohydrates.

2. **Intermediate Compound Linking Glycolysis to Krebs Cycle**:
- The second statement claims that the intermediate compound linking glycolysis with the Krebs cycle is malic acid. This is incorrect. The correct intermediate compound is acetyl CoA, which is formed from pyruvate after glycolysis. Malic acid is part of the Krebs cycle but does not link glycolysis to it.

**Hint**: Focus on the key intermediates in cellular respiration: glycolysis produces pyruvate, which is converted to acetyl CoA before entering the Krebs cycle.

3. **ATP Yield from Glucose**:
- The third statement states that one glucose molecule yields a net gain of 36 ATP during respiration. This is a true statement as aerobic respiration can yield up to 36 ATP from one glucose molecule when considering all stages (glycolysis, Krebs cycle, and oxidative phosphorylation).

**Hint**: Recall the overall ATP yield from glucose in aerobic respiration, which includes contributions from glycolysis and the Krebs cycle.

4. **Net Gain of ATP During Glycolysis**:
- The fourth statement mentions that one glucose molecule yields a net gain of 2 ATP during glycolysis. This is also true because, during glycolysis, 4 ATP are produced, but 2 ATP are consumed, resulting in a net gain of 2 ATP.

**Hint**: Remember the ATP investment and payoff phases of glycolysis to calculate the net gain.

### Conclusion:
The only incorrect statement among the options provided is the second one, which incorrectly identifies malic acid as the intermediate linking glycolysis to the Krebs cycle.

### Final Answer:
The wrong statement is: "The intermediate compound which links glycolysis with Krebs cycle is malic acid."