Past Papers
5090Cambridge O Levels
Biology Past Papers
12 exam sessions — 2019 to 2025
Exam Tips for Biology
- 1Paper 1 (MCQ): know MRS NERG for life processes and all organelle functions.
- 2Osmosis: 'movement of water molecules from high water potential to low water potential through a selectively permeable membrane'.
- 3Photosynthesis: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ — balanced equation, not shorthand.
- 4Paper 4 (Alt to Practical): biological drawings must be large, clear, and fully labelled.
- 5Genetics: practise Punnett squares for both monohybrid and codominance crosses.
Question Papers
Paper 1 Variant 1 — Question PaperPaper 1 Variant 2 — Question PaperPaper 1 Variant 3 — Question PaperPaper 2 Variant 1 — Question PaperPaper 2 Variant 2 — Question PaperPaper 2 Variant 3 — Question PaperPaper 4 Variant 1 — Question PaperPaper 4 Variant 2 — Question PaperPaper 4 Variant 3 — Question Paper
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Study Notes for Biology