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CAIE A-Level Biology 12.2.11 Aerobic and Anaerobic Energy Yield

Practise explaining higher aerobic ATP yield through complete oxidation and oxidative phosphorylation, versus glycolysis-only ATP and retained product energy anaerobically.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • link aerobic yield with Krebs-cycle coenzymes and oxidative phosphorylation
  • state that fermentation gains ATP only through substrate-level phosphorylation in glycolysis
  • explain incomplete substrate oxidation and retained product energy as lower anaerobic yield

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