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Biology · Edexcel 4BI1 · Biology Paper 1 · November 2023

Edexcel IGCSE Biology Biology Paper 1 November 2023 examiner report (4BI1/1B)

2h 110 marks

Examiner report

  1. Q1 - 9 marks - Energy in ecosystems, Increasing crop yield, Pyramids of number, biomass and energy
  2. Q2 - 10 marks - Osmosis, Transport in and out of cells
  3. Q3 - 14 marks - Ventilation and the thorax
  4. Q4 - 10 marks - Blood, The specific immune response
  5. Q5 - 13 marks - Genes and alleles, Monohybrid inheritance, Natural selection, Probability and ratios in genetic crosses
  6. Q6 - 10 marks - The reflex arc
  7. Q7 - 12 marks - Classification, Food production using micro-organisms, Pathogens
  8. Q8 - 10 marks - The human reproductive system
  9. Q9 - 16 marks - Hormones and the endocrine system, Selective breeding
  10. Q10 - 6 marks - Limiting factors in photosynthesis