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International Baccalaureate IB Biology
B.1.1 Carbohydrates and lipids
B.1.2 Proteins
B.2.1 Membranes and membrane transport
B.2.2 Organelles and compartmentalization
B.2.3 Cell specialization
B.3.1 Gas exchange
B.3.2 Transport
B.3.3 Muscle and motility
B.4.1 Adaptation to environment
B.4.2 Ecological niches