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Biology HL / SL
Science
Biology HL / SL
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4 Topics
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Unity and Diversity
Water
Nucleic acids
Origin of cells
Cell structure
Viruses
Diversity of organisms
Classification and cladistics
Evolution and speciation
Conservation of biodiversity
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Form and Function
Carbohydrates and lipids
Proteins
Membranes and membrane transport
Organelles and compartmentalization
Cell specialization
Gas exchange
Transport
Muscles and motility
Adaptation to environment
Ecological niches
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Interaction and Interdependence
Enzymes and metabolism
Cell respiration
Photosynthesis
Chemical signaling
Neural signalling
Integration of body systems
Defence against disease
Populations and communities
Transfers of energy and matter
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Community and Change
DNA replication
Protein synthesis
Mutation and gene editing
Cell and nuclear division
Gene expression
Water potential
Reproduction
Inheritance
Homeostasis
Natural selection
Stability and change
Climate change
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