Edexcel IGCSE Biology Biology Paper 1 January 2023 mark scheme 4BI1/1BR
Practise the past exam questions by topic
Gas exchange13 Qs
Ventilation & the thorax15 Qs
Pathogens10 Qs
Photosynthesis14 Qs
Ecosystems5 Qs
Energy in ecosystems25 Qs
Pyramids of number, biomass & energy14 Qs
Diet & nutrition21 Qs
Enzymes5 Qs
Food tests12 Qs
Increasing crop yield16 Qs
Blood16 Qs
Hormones & the endocrine system7 Qs
Tropisms5 Qs
Pollination & fertilisation in plants12 Qs
Sexual & asexual reproduction7 Qs
Monohybrid inheritance23 Qs
Probability & ratios in genetic crosses20 Qs
Selective breeding10 Qs
Sex determination10 Qs
Reflex arc9 Qs
Blood vessels5 Qs
Coronary heart disease6 Qs
Heart & circulation12 Qs
Limiting factors in photosynthesis13 Qs
Factors affecting enzyme activity12 Qs
Genetic engineering13 Qs
+23 more
11 questions
- Q1 - 7 marks - Gas exchange, Ventilation and the thorax
- Q2 - 7 marks - Pathogens, Photosynthesis
- Q3 - 10 marks - Ecosystems, Energy in ecosystems, Pyramids of number, biomass and energy
- Q4 - 10 marks - Diet and nutrition, Enzymes, Food tests
- Q5 - 13 marks - Increasing crop yield
- Q6 - 7 marks - Blood, Hormones and the endocrine system, Tropisms
- Q7 - 12 marks - Pollination and fertilisation in plants, Sexual and asexual reproduction
- Q8 - 14 marks - Monohybrid inheritance, Probability and ratios in genetic crosses, Selective breeding, Sex determination, The reflex arc
- Q9 - 10 marks - Blood vessels, Coronary heart disease, The heart and circulation
- Q10 - 12 marks - Limiting factors in photosynthesis, Photosynthesis
- Q11 - 8 marks - Factors affecting enzyme activity, Genetic engineering
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