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Cambridge · O Level · Biology

October/November 2023 — Paper 4 · Variant 1.

16 structured questions · 37 marks

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The mark scheme comes with the Biology course.

Topics covered

  • Enzyme action
  • Effects of temperature and pH
  • Specialised cells, tissues and organs
  • Antibiotics
  • Blood glucose control

Questions in this paper

  • Q1b(ii)Effects of temperature and pH6 marksincludes a figure
  • Q1a(i)Enzyme action1 marks
  • Q1a(v)Enzyme action1 marks
  • Q1a(iii)Enzyme action3 marks
  • Q1a(vii)Enzyme action1 marks
  • Q1b(i)Enzyme action1 marksincludes a figure
  • Q1a(iv)Enzyme action3 marks
  • Q1a(vi)Enzyme action2 marks
  • Q1a(ii)Enzyme action2 marks
  • Q2a(ii)Antibiotics2 marks
  • Q2cAntibiotics2 marks
  • Q2a(i)Antibiotics1 marksincludes a figure
  • Q2b(ii)Antibiotics1 marks
  • Q2b(i)Antibiotics4 marks
  • Q3a(ii)Specialised cells, tissues and organs5 marksincludes a figure
  • Q3bBlood glucose control2 marks

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