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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 compartmentalization
B2.3 Cell specialization
B3.1 Gas exchange
B3.2 Transport
B4.1 Adaptation to environment
B4.2 Ecological niches
C Interaction and Interdependence
C1.1 Enzymes and metabolism
C1.2 Cell respiration
C1.3 Photosynthesis
C2.2 Neural signalling
C3.1 Integration of body systems
C3.2 Defence against disease
C4.1 Populations and communities
C4.2 Transfers of energy and matter
D Continuity and Change
D1.1 DNA replication
D1.2 Protein synthesis
D1.3 Mutation and gene editing
D1.3.1—Gene mutations
D1.3.2—Base substitution consequences
D1.3.3—Insertion and deletion consequences
D1.3.4—Causes of mutation
D1.3.5—Randomness in mutation
D1.3.6—Consequences in germ vs. somatic cells
D1.3.7—Mutation as source of variation
D2.1 Cell and nuclear division
D2.3 Water potential
D3.1 Reproduction
D3.2 Inheritance
D3.3 Homeostasis
D4.1 Natural selection
D4.2 Stability and change
D4.3 Climate change
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