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IB Biology
A Unity and Diversity
A1.1 Water
A1.2 Nucleic acids
A2.1 Origins of cells
A2.2 Cell structure
A3.1 Diversity of organisms
A4.1 Evolution and speciation
A4.2 Conservation of biodiversity
B Form and Function
B1.1 Carbohydrates and lipids
B1.2 Proteins
B2.1 Membranes and membrane transport
B2.2 Organelles and compartmentalisation
B2.3 Cell specialisation
B3.1 Gas exchange
B3.2 Transport
B4.1 Adaptation to environment
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