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

Edexcel IGCSE Biology Biology Paper 1 June 2023 mark scheme 4BI1/1B

2h 110 marks

Practise the past exam questions by topic

  1. Q1 - 8 marks - Pathogens
  2. Q2 - 13 marks - Energy in ecosystems, Pyramids of number, biomass and energy, Sampling and fieldwork
  3. Q3 - 12 marks - Cell structure, Eukaryotic and prokaryotic cells, Osmosis, Rate of diffusion, Transport in and out of cells
  4. Q4 - 14 marks - The reflex arc
  5. Q5 - 14 marks - Blood, The specific immune response
  6. Q6 - 14 marks - Monohybrid inheritance, Probability and ratios in genetic crosses
  7. Q7 - 13 marks - Factors affecting enzyme activity
  8. Q8 - 12 marks - Anaerobic respiration, Food production using micro-organisms
  9. Q9 - 10 marks - Genetic engineering