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Cambridge · O Level · Biology
October/November 2025 — Paper 2 · Variant 1.
5 structured questions · 12 marks
Download question paper (PDF)Mark scheme — for enrolled students
The mark scheme comes with the Biology course.
Topics covered
- Circulatory system
- Biotechnology
- Effects of humans on ecosystems
- Antibiotics
Questions in this paper
- Q1aSexual reproduction in humans3 marksincludes a figure
- Q1bSexual reproduction in humans2 marksincludes a figure
- Q1c(ii)Sexual reproduction in humans2 marks
- Q1c(i)Sexual reproduction in humans1 marks
- Q1c(iii)Sexual reproduction in humans3 marks
- Q2b(ii)Inheritance2 marks
- Q2a(iii)Mammalian sense organs3 marks
- Q2a(ii)Mammalian sense organs2 marksincludes a figure
- Q2a(i)Mammalian sense organs2 marksincludes a figure
- Q2b(i)Mammalian sense organs2 marks
- Q3a(ii)Blood vessels1 marksincludes a figure
- Q3b(i)Excretion2 marks
- Q3a(i)Human digestive system2 marksincludes a figure
- Q3a(iii)Excretion1 marks
- Q3b(ii)Excretion3 marks
- Q3b(iii)Excretion2 marks
- Q4bTranspiration and translocation4 marksincludes a figure
- Q4aPhotosynthesis5 marks
- Q5a(i)Circulatory system1 marksincludes a figure
- Q5a(ii)Circulatory system2 marks
- Q5bHeart4 marksincludes a figure
- Q5a(iii)Heart3 marks
- Q6bBiotechnology2 marks
- Q6cEffects of humans on ecosystems4 marksincludes a figure
- Q6aConservation2 marks
- Q7bAntibiotics3 marksincludes a figure
- Q7a(iii)Antibiotics2 marks
- Q7a(i)Disease2 marks
- Q7a(ii)Disease3 marks
- Q8aMammalian nervous system6 marksincludes a figure
- Q8bMammalian nervous system4 marksincludes a figure
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