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Cambridge · O Level · Biology
May/June 2025 — Paper 1 · Variant 2.
17 multiple-choice questions · 17 marks
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Topics covered
- Circulatory system
- Photosynthesis
- Effects of temperature and pH
- Nuclear division
- Disease
- Mammalian sense organs
- Inheritance
- Effects of humans on ecosystems
- Mammalian hormones
- Features of organisms
- Human digestive system
- Aerobic respiration
- Heart
- Blood
Questions in this paper
- Q1Cell structure and functionMCQ
- Q2Specialised cells, tissues and organsMCQ
- Q3Features of organismsMCQincludes a figure
- Q4Diffusion and osmosisMCQ
- Q5Diffusion and osmosisMCQincludes a figure
- Q6Enzyme actionMCQ
- Q7Enzyme actionMCQ
- Q8Effects of temperature and pHMCQincludes a figure
- Q9PhotosynthesisMCQ
- Q10PhotosynthesisMCQ
- Q11PhotosynthesisMCQ
- Q12Effects of temperature and pHMCQ
- Q13Human digestive systemMCQincludes a figure
- Q14Human digestive systemMCQ
- Q15Absorption and assimilationMCQ
- Q16Anaerobic respirationMCQ
- Q17Aerobic respirationMCQincludes a figure
- Q18Circulatory systemMCQ
- Q19HeartMCQ
- Q20HeartMCQincludes a figure
- Q21BloodMCQincludes a figure
- Q22DiseaseMCQ
- Q23DiseaseMCQ
- Q24ImmunityMCQ
- Q25Urinary systemMCQincludes a figure
- Q26Urinary systemMCQ
- Q27Mammalian sense organsMCQ
- Q28Mammalian sense organsMCQincludes a figure
- Q29Mammalian nervous systemMCQ
- Q30Blood glucose controlMCQincludes a figure
- Q31Mammalian hormonesMCQincludes a figure
- Q32Nuclear divisionMCQ
- Q33Sexual reproduction in plantsMCQincludes a figure
- Q34Sexual reproduction in humansMCQ
- Q35Sexual reproduction in humansMCQ
- Q36InheritanceMCQ
- Q37InheritanceMCQ
- Q38Energy flowMCQ
- Q39Nutrient cyclesMCQ
- Q40Effects of humans on ecosystemsMCQ
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