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Theme A: Unity & Diversity
A1.1 WaterA1.2 Nucleic Acids
[HL] A2.1 Origins of Cells
A2.2 Cell Structure
[HL] A2.3 Viruses
A3.1 Diversity of Organisms
[HL] A3.2 Classification and Cladistics
A4.1 Evolution and Speciation
A4.2 Conservation of Biodiversity
Theme B: Unity & Diversity
B1.1 Enzymes and MetabolismB1.2 Proteins
B2.1 Membranes and Membrane Transport
B2.2 Organelles and Compartmentalization
B2.3 Cell Specialization
B3.1 Gas Exchange
B3.2 Transport
[HL] B3.3 Muscle and Motility
B4.1 Adaptation to Environment
B4.2 Ecological Niches
Theme C: Interaction & Interdependence
C1.1 Enzymes and Metabolism
C1.2 Cell Respiration
C1.3 Photosynthesis
[HL] C2.1 Chemical Signalling
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
C1.2 Cell Respiration
C1.3 Photosynthesis
[HL] C2.1 Chemical Signalling
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
Theme D: Continuity & Change
D1.1 DNA ReplicationD1.2 Protein Synthesis
D1.3 Mutation and Gene Editing
D2.1 Cell and Nuclear Division
[HL] D2.2 Gene Expression
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