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Biology · Edexcel 4BI1 · Biology Paper 1 · November 2021

Edexcel IGCSE Biology Biology Paper 1 November 2021 examiner report (4BI1/1B)

2h 110 marks

Examiner report

  1. Q1 - 6 marks - Food production using micro-organisms, Rate of diffusion, Respiration, Ventilation and the thorax
  2. Q2 - 10 marks - The heart and circulation
  3. Q3 - 11 marks - Limiting factors in photosynthesis, Photosynthesis
  4. Q4 - 11 marks - Anaerobic respiration, Classification, Genetic engineering, The greenhouse effect and climate change
  5. Q5 - 8 marks - Increasing crop yield, Sampling and fieldwork
  6. Q6 - 10 marks - Ecosystems, Energy in ecosystems, Pyramids of number, biomass and energy
  7. Q7 - 8 marks - Monohybrid inheritance, Probability and ratios in genetic crosses, The human reproductive system
  8. Q8 - 10 marks - Diet and nutrition, Food tests
  9. Q9 - 12 marks - Effects of smoking
  10. Q10 - 14 marks - Homeostasis, Natural selection, Temperature regulation, The reflex arc
  11. Q11 - 10 marks - Air pollution, Limiting factors in photosynthesis