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Cambridge · O Level · Biology

October/November 2023 — Paper 2 · Variant 1.

33 structured questions · 80 marks

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Topics covered

  • Sexual reproduction in plants
  • DNA
  • Aerobic respiration
  • Anaerobic respiration
  • Human digestive system
  • Effects of humans on ecosystems
  • Mammalian hormones
  • Conservation
  • Blood
  • Biological molecules
  • Diffusion and osmosis
  • Disease
  • Specialised cells, tissues and organs
  • Variation
  • Inheritance
  • Mammalian nervous system

Questions in this paper

  • Q1aBlood3 marksincludes a figure
  • Q1b(ii)Blood2 marks
  • Q1b(i)Specialised cells, tissues and organs3 marks
  • Q2a(ii)Sexual reproduction in plants2 marks
  • Q2a(iii)Sexual reproduction in plants3 marks
  • Q2a(i)Sexual reproduction in plants2 marksincludes a figure
  • Q2b(ii)Effects of humans on ecosystems2 marks
  • Q2b(i)Effects of humans on ecosystems1 marks
  • Q2c(ii)Mammalian hormones2 marks
  • Q2c(i)Mammalian hormones3 marks
  • Q3a(i)Biological molecules2 marksincludes a figure
  • Q3b(i)Biological molecules3 marks
  • Q3cBiological molecules2 marks
  • Q3b(ii)Diffusion and osmosis3 marks
  • Q3a(ii)Biological molecules2 marks
  • Q4a(i)Mammalian nervous system4 marksincludes a figure
  • Q4a(ii)Disease2 marks
  • Q4b(i)Variation2 marks
  • Q4b(ii)Inheritance2 marks
  • Q5b(i)Human digestive system4 marks
  • Q5a(i)Human digestive system1 marksincludes a figure
  • Q5b(ii)Mammalian hormones1 marks
  • Q5a(ii)Human digestive system1 marks
  • Q5a(iii)Human digestive system4 marks
  • Q6a(i)DNA1 marksincludes a figure
  • Q6cDNA3 marks
  • Q6bDNA2 marks
  • Q6a(ii)DNA3 marks
  • Q7a(ii)Aerobic respiration2 marks
  • Q7bAnaerobic respiration2 marks
  • Q7a(i)Aerobic respiration1 marks
  • Q8bConservation4 marks
  • Q8aEffects of humans on ecosystems6 marks

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