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CAIE A-Level Biology 12.2 Respiration Question Bank

Practise respiration questions by tracking carbon, ATP and reduced coenzymes through glycolysis, link reaction, Krebs cycle and oxidative phosphorylation.

Exam points

map glycolysis, link reaction, Krebs cycle and oxidative phosphorylation to cell locations
follow carbon loss, coenzyme reduction and substrate-level ATP through respiration stages
explain ETC inhibition, proton gradients, ATP synthase and oxygen as final electron acceptor

Covered syllabus points

12.2.1—Four stages of aerobic respiration location 12.2.2—Glycolysis pathway 12.2.3—Pyruvate and the link reaction 12.2.4—Link reaction 12.2.5—Krebs cycle carbon compounds 12.2.6—Krebs cycle redox reactions 12.2.7—NAD and FAD in respiration 12.2.8—Oxidative phosphorylation 12.2.9—Mitochondria structure-function relationship 12.2.10—Lactate and ethanol fermentation 12.2.11—Energy yield 12.2.12—Rice adaptations to flooding 12.2.13—Redox indicator investigation 12.2.14—Respirometer investigations

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