Biology 2025 syllabus1. Molecules2. Cells3. Organisms4. EcosystemsAUnity and Diversity A1. Water A2. Nucleic Acids A.2.1. Origin of cells (HL) A.2.2. Cell structure A.2.3 Viruses (HL) A.3.1. Diversity of organisms A.3.2. Classification and cladistics A4.1. Evolution and speciation A4.2. Conservation of Biodiversity BForm an Function B.1.1. Carbohydrates and lipids B.1.2. Proteins B.2.1. Membranes and membrane transport B.2.2. Organelles and compartamentalization B.2.3. Cell specialization B. 3.1 Gas Exchange B.3.2. Transport B.3.3. Muscle and Motility B. 4.1 Adaptatipn to environment B.4.2. Ecological niches CInteraction and Interdependence C.1.1. Enzymes and metabolism C.1.2. Cell respiration C.1.3. Photosynthesis C.2.1. Chemical signaling (HL) C.2.2. Neural signaling C.3.1. Integration of body systems C.3.2. Defense against disease C.4.1. Population and communities C.4.2. Transfer of energy and matter DContinuity and change D.1.1. DNA replication D.1.2. Protein synthesis D.1.3. Mutations and gene editing D.2.1. Cell and nuclear division D.2.2. Gene expresion D.2.3. Water potential D.3.1. Reproduction D.3.2. Inheritance D.3.3. Homeostasis D.4.1. Natural selection D.4.2. Stability and change D.4.3. Climate change Contact MenuContact