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Cambridge · O Level · Biology
May/June 2025 — Paper 1 · Variant 1.
15 multiple-choice questions · 15 marks
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Topics covered
- Enzyme action
- Blood vessels
- Mammalian sense organs
- Temperature control
- Disease
- Antibiotics
- Nuclear division
- Urinary system
- Sexual reproduction in humans
- Energy flow
- Homeostasis
- Effects of humans on ecosystems
- Blood glucose control
Questions in this paper
- Q1Specialised cells, tissues and organsMCQincludes a figure
- Q2Cell structure and functionMCQincludes a figure
- Q3Specialised cells, tissues and organsMCQincludes a figure
- Q4Specialised cells, tissues and organsMCQ
- Q5Features of organismsMCQincludes a figure
- Q6Active transportMCQ
- Q7Diffusion and osmosisMCQ
- Q8Enzyme actionMCQincludes a figure
- Q9Effects of temperature and pHMCQincludes a figure
- Q10Enzyme actionMCQ
- Q11Leaf structureMCQincludes a figure
- Q12Uptake and transport of water and ionsMCQincludes a figure
- Q13Transpiration and translocationMCQincludes a figure
- Q14Human gas exchangeMCQ
- Q15Aerobic respirationMCQ
- Q16BloodMCQincludes a figure
- Q17HeartMCQ
- Q18Blood vesselsMCQ
- Q19Blood vesselsMCQ
- Q20DiseaseMCQ
- Q21DiseaseMCQ
- Q22AntibioticsMCQ
- Q23Urinary systemMCQincludes a figure
- Q24Urinary systemMCQ
- Q25Mammalian sense organsMCQ
- Q26Temperature controlMCQincludes a figure
- Q27Mammalian nervous systemMCQ
- Q28HomeostasisMCQ
- Q29Blood glucose controlMCQ
- Q30Coordination and response in plantsMCQ
- Q31Nuclear divisionMCQ
- Q32Nuclear divisionMCQ
- Q33Sexual reproduction in humansMCQ
- Q34Sexual reproduction in humansMCQ
- Q35Sexual reproduction in humansMCQincludes a figure
- Q36VariationMCQ
- Q37Mammalian sense organsMCQ
- Q38Energy flowMCQ
- Q39Effects of humans on ecosystemsMCQ
- Q40Effects of humans on ecosystemsMCQincludes a figure
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