Gce Model Questions Vol1 2019 Biology Question 14
Practice objective / multiple choice question 14 from the 2019 Gce Model Questions Vol1 Biology examination.
Aerobic respiration of one molecule of glucose normally yields 32 ATP molecules (4 from substrate‑level phosphorylation, 10 NADH each giving 2.5 ATP and 2 FADH₂ each giving 1.5 ATP). A toxin partially inhibits Complex IV of the electron‑transport chain, reducing the efficiency of proton pumping by 30 %. Assuming the ATP yield from each NADH and each FADH₂ is reduced proportionally, calculate (a) the new total ATP yield from one glucose molecule, and (b) the percentage decrease in ATP production compared with the normal yield.
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About This Question
This is Gce Model Questions Vol1 2019 Biology Question 14. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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