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Cambridge · O Level · Biology

May/June 2023 — Paper 2 · Variant 1.

26 structured questions · 80 marks

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

The mark scheme comes with the Biology course.

Topics covered

  • Heart
  • Disease and immunity
  • Mammalian sense organs
  • Diet
  • Coordination and response in plants
  • Mammalian hormones
  • Nuclear division
  • Ecosystems and biodiversity
  • Energy flow
  • Selection
  • Specialised cells, tissues and organs
  • Effects of humans on ecosystems
  • Inheritance
  • Blood
  • Human digestive system
  • Blood vessels
  • Nutrient cycles
  • Features of organisms
  • Diffusion and osmosis

Questions in this paper

  • Q1aMammalian hormones3 marks
  • Q1bMammalian hormones4 marks
  • Q2bEcosystems and biodiversity3 marks
  • Q2a(ii)Energy flow4 marks
  • Q2a(iii)Ecosystems and biodiversity2 marks
  • Q2a(i)Features of organisms6 marksincludes a figure
  • Q3dNuclear division2 marks
  • Q3cCoordination and response in plants5 marks
  • Q3aSpecialised cells, tissues and organs2 marksincludes a figure
  • Q3bDiffusion and osmosis3 marks
  • Q4a(ii)Diet2 marks
  • Q4a(i)Diet4 marksincludes a figure
  • Q4bHuman digestive system5 marks
  • Q5cInheritance3 marks
  • Q5a(i)Mammalian sense organs4 marksincludes a figure
  • Q5a(ii)Mammalian sense organs1 marksincludes a figure
  • Q5b(i)Mammalian sense organs3 marks
  • Q5b(ii)Mammalian sense organs2 marks
  • Q6a(i)Heart1 marks
  • Q6bDisease and immunity3 marks
  • Q6a(iii)Blood vessels1 marks
  • Q6cSelection5 marks
  • Q6a(iv)Blood1 marks
  • Q6a(ii)Heart1 marks
  • Q7bEffects of humans on ecosystems5 marks
  • Q7aNutrient cycles5 marksincludes a figure

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