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Biology
5 sections available · 22 chapters available
Free Biology study notes for Pearson Edexcel IGCSE students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
The nature and variety of living organisms
Characteristics of living organisms
Variety of living organisms
Structure and functions in living organisms
Level of organisation
Cell structure
Biological molecules
Movement of substances into and out of cells
Nutrition
Respiration
Gas exchange
Transport
Excretion
Co-ordination and response
Reproduction and inheritance
Reproduction
Inheritance
Ecology and the environment
The organism in the environment
Feeding relationships
Cycles within ecosystems
Human influences on the environment
Use of biological resources
Food production
Selective breeding
Genetic modification (genetic engineering)
Cloning
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