Select the wrong statement.

Options

A. Oxidative decarboxylation of pyruvic acid requires the presence of enzyme pyruvate dehydrogenase.
B. All living cells whether aerobic or anaerobic, perform glycolysis.
C. Cyanide does not stop chemiosmosis
D. Respiratory chain uses `O_(2)` as final hydrogen acceptor.

Explanation

To solve the question "Select the wrong statement," we need to analyze each of the provided statements regarding respiration in plants.

### Step-by-Step Solution:

1. **Statement 1: Oxidative decarboxylation of pyruvic acid requires the presence of enzyme pyruvate dehydrogenase.**
- This statement is **correct**. The enzyme pyruvate dehydrogenase is essential for the oxidative decarboxylation of pyruvic acid, converting it into acetyl-CoA in aerobic respiration.

2. **Statement 2: All living cells, whether aerobic or anaerobic, perform glycolysis.**
- This statement is also **correct**. Glycolysis is a universal metabolic pathway that occurs in the cytoplasm of all living cells, regardless of their oxygen requirements.

3. **Statement 3: Cyanide does not stop chemiosmosis.**
- This statement is **incorrect**. Cyanide is a potent inhibitor of the electron transport chain, specifically complex IV (cytochrome c oxidase). By inhibiting this complex, cyanide effectively halts the process of chemiosmosis, which is crucial for ATP production.

4. **Statement 4: The respiratory chain uses oxygen as the final hydrogen acceptor.**
- This statement is **correct**. In aerobic respiration, oxygen acts as the final electron acceptor in the electron transport chain, facilitating the production of ATP.

### Conclusion:
After evaluating all statements, the **incorrect statement** is:
- **Cyanide does not stop chemiosmosis.**

### Final Answer:
The wrong statement is: **Cyanide does not stop chemiosmosis.**

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