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IGCSE Biology: Complete Study Guide & Past Papers

GradeMax provides comprehensive IGCSE Biology revision with real past paper questions organized by topic. Practice cells, genetics, ecology, human biology, and plant biology with mark schemes.

5Topics
8Years of Papers
2017-2024Coverage
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IGCSE Biology Topics

1

Nature and Variety of Living Organisms

Characteristics of life, classification, and variety of organisms.

classificationcharacteristics of lifeorganisms
2

Structures and Functions in Living Organisms

Cells, enzymes, nutrition, respiration, gas exchange, and transport.

cellsenzymesnutrition
3

Reproduction and Inheritance

Reproduction, cell division, genetics, and evolution.

reproductiongeneticsDNA
4

Ecology and the Environment

Ecosystems, food chains, nutrient cycles, and human impact.

ecologyecosystemsfood chains
5

Use of Biological Resources

Food production, selective breeding, genetic modification, and cloning.

food productionselective breedinggenetic modification

Past Papers by Year

20242023202220212020201920182017

Frequently Asked Questions

What topics are in IGCSE Biology?

IGCSE Biology covers: Nature and Variety of Living Organisms, Structures and Functions (cells, enzymes, respiration), Reproduction and Inheritance (genetics), Ecology and Environment, and 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 phenotype ratios from results.

What is the difference between mitosis and meiosis?

Mitosis produces 2 identical diploid cells for growth/repair. Meiosis produces 4 different haploid cells (gametes) for sexual reproduction. Meiosis involves crossing over and creates genetic variation.

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 (CO₂ + H₂O → glucose + O₂), Aerobic respiration (glucose + O₂ → CO₂ + H₂O + energy), Magnification = image size / actual size.

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