IBO · DP Biology SL/HL
IB Biology Resources
syllabus · past papers and exam practice · practice · course outline
Units and topics
Choose a topic to see its available materials.
Unit 1 - Unity and diversity9 topics
Open this unit →- Topic 1.1 WaterMaterials
- Topic 1.2 Nucleic AcidsMaterials
- Topic 1.3 Origins of Cells (HL only)Materials
- Topic 1.4 Cell StructureMaterials
- Topic 1.5 Viruses (HL only)Materials
- Topic 1.6 Diversity of OrganismsMaterials
- Topic 1.7 Classification and Cladistics (HL only)Materials
- Topic 1.8 Evolution and SpeciationMaterials
- Topic 1.9 Conservation of BiodiversityMaterials
Unit 2 - Form and function10 topics
Open this unit →- Topic 2.1 Carbohydrates and LipidsMaterials
- Topic 2.2 ProteinsMaterials
- Topic 2.3 Membranes and Membrane TransportMaterials
- Topic 2.4 Organelles and CompartmentalizationMaterials
- Topic 2.5 Cell SpecializationMaterials
- Topic 2.6 Gas ExchangeMaterials
- Topic 2.7 TransportMaterials
- Topic 2.8 Muscle and Motility (HL only)Materials
- Topic 2.9 Adaptation to EnvironmentMaterials
- Topic 2.10 Ecological NichesMaterials
Unit 3 - Interaction and interdependence9 topics
Open this unit →- Topic 3.1 Enzymes and MetabolismMaterials
- Topic 3.2 Cell RespirationMaterials
- Topic 3.3 PhotosynthesisMaterials
- Topic 3.4 Chemical Signalling (HL only)Materials
- Topic 3.5 Neural SignallingMaterials
- Topic 3.6 Integration of Body SystemsMaterials
- Topic 3.7 Defence Against DiseaseMaterials
- Topic 3.8 Populations and CommunitiesMaterials
- Topic 3.9 Transfers of Energy and MatterMaterials
Unit 4 - Continuity and change12 topics
Open this unit →- Topic 4.1 DNA ReplicationMaterials
- Topic 4.2 Protein SynthesisMaterials
- Topic 4.3 Mutation and Gene EditingMaterials
- Topic 4.4 Cell and Nuclear DivisionMaterials
- Topic 4.5 Gene Expression (HL only)Materials
- Topic 4.6 Water PotentialMaterials
- Topic 4.7 ReproductionMaterials
- Topic 4.8 InheritanceMaterials
- Topic 4.9 HomeostasisMaterials
- Topic 4.10 Natural SelectionMaterials
- Topic 4.11 Stability and ChangeMaterials
- Topic 4.12 Climate ChangeMaterials
Past papers and exam practice
These are shortcuts to available files. Open the course paper picker for the full year and paper selection.