1. During aerobic respiration, role of oxygen is limited to the terminal stage. 2. In ETC (Electron Transport Chain), one molecule of NADH+H ^+ gives rise to 2 ATP molecules, and one FADH ₂ gives rise to 3 ATP molecules. 3. ATP is synthesized through complex V. 4. Oxidation-reduction reactions produce proton gradient in respiration.

Answer: 2. In ETC (Electron Transport Chain), one molecule of NADH+H ^+ gives rise to 2 ATP molecules, and one FADH ₂ gives rise to 3 ATP molecules. Find the incorrect statement. Per NADH, about 3 ATP are formed; per FADH ₂ , about 2 ATP. Statement 2 reverses these and is incorrect. Oxygen acts only at the terminal step as the final electron acceptor, ATP is made through complex V (ATP synthase), and redox reactions create the proton gradient: all correct.

Topic: TCA cycle and electron transport system, ATP yield· Plant Physiology

Which of the following statements is incorrect ?

1. During aerobic respiration, role of oxygen is limited to the terminal stage.

2. In ETC (Electron Transport Chain), one molecule of NADH+H\(^+\) gives rise to 2 ATP molecules, and one FADH\(_2\) gives rise to 3 ATP molecules.

3. ATP is synthesized through complex V.

4. Oxidation-reduction reactions produce proton gradient in respiration.

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Answer: 2. In ETC (Electron Transport Chain), one molecule of NADH+H\(^+\) gives rise to 2 ATP molecules, and one FADH\(_2\) gives rise to 3 ATP molecules.

Find the incorrect statement.

Per NADH, about 3 ATP are formed; per FADH\(_2\), about 2 ATP. Statement 2 reverses these and is incorrect.
Oxygen acts only at the terminal step as the final electron acceptor, ATP is made through complex V (ATP synthase), and redox reactions create the proton gradient: all correct.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of the following statements is incorrect ?

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