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Cambridge · O Level · Biology

October/November 2025 — Paper 3 · Variant 2.

8 structured questions · 18 marks

Download question paper (PDF)Mark scheme — for enrolled students

The mark scheme comes with the Biology course.

Topics covered

  • Enzymes
  • Plant nutrition
  • Diffusion and osmosis

Questions in this paper

  • Q1b(i)Enzymes2 marks
  • Q1b(ii)Enzymes1 marks
  • Q1a(i)Enzymes5 marks
  • Q1a(ii)Enzymes3 marks
  • Q2b(i)Plant nutrition1 marks
  • Q2b(vi)Plant nutrition1 marks
  • Q2b(iv)Plant nutrition2 marks
  • Q2cPlant nutrition6 marks
  • Q2b(ii)Plant nutrition1 marksincludes a figure
  • Q2b(iii)Plant nutrition5 marksincludes a figure
  • Q2aPlant nutrition3 marksincludes a figure
  • Q2b(v)Plant nutrition2 marks
  • Q3cDiffusion and osmosis2 marks
  • Q3aDiffusion and osmosis3 marksincludes a figure
  • Q3bDiffusion and osmosis3 marksincludes a figure

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