Respiration — Normal
Apply the topic independently and explain your method. No hints during the test.
Includes extension practice
Aerobic respiration, its equations and uses of energy are required. Yeast fermentation, muscle anaerobic respiration and oxygen-debt mechanisms in this shared set are additional content.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0653 syllabus2028–2029 · B12.1.1–4
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