Biology Past Papers
Master Edexcel IGCSE Biology with organized past paper questions and detailed explanations.
27
Topics
9
Years
2017–2025
Coverage
Topics
Characteristics of Living Organisms
Variety of Living Organisms
Cell Structure and Organisation
Biological Molecules
Movement of Substances
Nutrition in Plants
Nutrition in Humans
Respiration
Gas Exchange
Transport in Plants
Transport in Humans
Excretion
Coordination and Response
Homeostasis
Reproduction in Plants
Reproduction in Humans
Cell Division
Inheritance
Natural Selection and Evolution
Organisms and Their Environment
Feeding Relationships
Nutrient Cycles
Human Influences on the Environment
Food Production
Selective Breeding
Genetic Engineering
Cloning
FAQ
What topics are in Edexcel IGCSE Biology (4BI1)?
Edexcel IGCSE Biology has 5 sections with 27 chapters: Section 1 (Nature and Variety of Living Organisms), Section 2 (Structures and Functions — cells, nutrition, respiration, transport, coordination), Section 3 (Reproduction and Inheritance — genetics, evolution), Section 4 (Ecology and the Environment), and Section 5 (Use of Biological Resources).
How do you draw a Punnett square?
To draw a Punnett square: 1) Write parent genotypes, 2) Split alleles — one parent across top, one down side, 3) Fill in boxes by combining alleles, 4) Calculate genotype and phenotype ratios from results.
What is the difference between mitosis and meiosis?
Mitosis produces 2 identical diploid cells for growth and repair. Meiosis produces 4 genetically different haploid cells (gametes) for sexual reproduction. Meiosis involves two divisions and creates genetic variation through crossing over and independent assortment.
How many papers are in IGCSE Biology?
Edexcel IGCSE Biology has two papers: Paper 1 (2 hours, 110 marks) and Paper 2 (1 hour 15 minutes, 70 marks). Both are written exams covering all topics.
What equations do I need for IGCSE Biology?
Key equations: Photosynthesis (6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂), Aerobic respiration (C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy), Anaerobic respiration in animals (glucose → lactic acid), Magnification = image size ÷ actual size.