Biology HL / SL

Unity and Diversity
Water Nucleic acids Origin of cells Cell structure Viruses Diversity of organisms Classification and cladistics Evolution and speciation Conservation of biodiversity
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
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
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