Edexcel IGCSE Biology Biology Paper 2 January 2023 examiner report (4BI1/2B)
Examiner report
- Q1 - 14 marks - Osmoregulation, Rate of diffusion, The kidney and the urinary system, Ultrafiltration and selective reabsorption
- Q2 - 10 marks - The eye
- Q3 - 10 marks - Genes and alleles, Probability and ratios in genetic crosses, Selective breeding, Sex determination, Variation
- Q4 - 11 marks - Diet and nutrition, Micropropagation
- Q5 - 13 marks - Biodiversity, The greenhouse effect and climate change, The nitrogen cycle
- Q6 - 12 marks - Immunisation, Pathogens, Protein synthesis
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