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Cambridge · O Level · Biology
October/November 2025 — Paper 1 · Variant 1.
12 multiple-choice questions · 12 marks
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Topics covered
- Active transport
- Respiration
- Diet
- Human gas exchange
- Anaerobic respiration
- Blood vessels
- Sexual reproduction in plants
- Nuclear division
- Mammalian hormones
- Selection
- Conservation
- Energy flow
Questions in this paper
- Q1Cell structure and functionMCQ
- Q2Concept and use of a classification systemMCQ
- Q3Concept and use of a classification systemMCQincludes a figure
- Q4Diffusion and osmosisMCQ
- Q5Active transportMCQ
- Q6Enzyme actionMCQ
- Q7PhotosynthesisMCQ
- Q8PhotosynthesisMCQincludes a figure
- Q9PhotosynthesisMCQincludes a figure
- Q10PhotosynthesisMCQincludes a figure
- Q11Uptake and transport of water and ionsMCQincludes a figure
- Q12DietMCQ
- Q13Human gas exchangeMCQ
- Q14RespirationMCQ
- Q15Anaerobic respirationMCQ
- Q16Blood vesselsMCQ
- Q17BloodMCQ
- Q18DiseaseMCQ
- Q19ImmunityMCQ
- Q20AntibioticsMCQincludes a figure
- Q21Urinary systemMCQ
- Q22Blood glucose controlMCQincludes a figure
- Q23Blood glucose controlMCQ
- Q24Temperature controlMCQ
- Q25Mammalian hormonesMCQ
- Q26Coordination and response in plantsMCQincludes a figure
- Q27Coordination and response in plantsMCQincludes a figure
- Q28Sexual reproduction in plantsMCQ
- Q29DNAMCQ
- Q30Nuclear divisionMCQ
- Q31SelectionMCQ
- Q32VariationMCQ
- Q33BiotechnologyMCQ
- Q34Genetic modificationMCQ
- Q35BiotechnologyMCQ
- Q36BiotechnologyMCQ
- Q37Energy flowMCQincludes a figure
- Q38Energy flowMCQ
- Q39Nutrient cyclesMCQincludes a figure
- Q40ConservationMCQ
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