Sample Questions — Aerobic respiration
Try 5 questions below from Aerobic respiration. Get all 11 in the MedicNEET app.
MCQ
Why is the conversion of succinyl-CoA to succinic acid considered substrate-level phosphorylation?
✅ Correct Answer: B
This reaction directly produces GTP (which forms ATP), independent of ETS.
MCQ
Why is oxygen crucial only at the terminal step of aerobic respiration?
✅ Correct Answer: C
Oxygen removes electrons from the ETS, allowing NADH and FADH₂ oxidation.
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MCQ
Why does pyruvate produce more ATP in aerobic than anaerobic respiration?
✅ Correct Answer: B
In aerobic respiration, pyruvate is fully oxidised to CO₂, releasing maximum ATP via TCA + ETS.
MCQ
Why is the inner mitochondrial membrane essential for ATP production in aerobic respiration?
✅ Correct Answer: D
ETS components and ATP synthase complexes (F₀–F₁) are embedded here.
MCQ
What is the significance of oxygen in the electron transport system of aerobic respiration?
✅ Correct Answer: D
In the electron transport system, oxygen acts as the final electron acceptor. It helps oxidise NADH to NAD⁺, allowing NAD⁺ to return to earlier stages of respiration and continue energy production.
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