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- Introduction to the activities
- Molecules - Activities
- A1.1 Water - Activities
- Atoms, molecules and bonds
- Properties of Water (2025)
- Aquatic habitats (2025)
- The origins of water on Earth HL (2025)
- A1.2 Nucleic acids - Activities (from planning)
- RNA and DNA Structure (2025)
- Extracting DNA Experiment (2025)
- DNA for information storage (2025)
- DNA structure - nucleosomes HL (2025)
- B1.1 Carbohydrates & lipids - Activities (from planning)
- Carbon based compounds.
- Condensation & Hydrolysis.
- Calorimetry experiment.
- Special features of lipids (2025)
- B1.2 Proteins - Activities
- Amino acid & peptide bonds (2025)
- Polypeptide structure (2025)
- Infinite variety of protein structures (2025)
- Four levels of protein structure (2025)
- Bonding in proteins HL (2025)
- C1.1 Enzymes - Activities
- Enzymes & Metabolic pathways (2025)
- Yeast and Catalase Experiment (2025)
- Activation energy (2025)
- Intracellular & extracellular HL (2025)
- Inhibition of Enzymes HL (2025)
- C1.2 Cell respiration - Activities
- ATP a suspected cause of long covid (2025)
- Respiration of lipids & carbohydrates
- Cell Respiration (2025)
- Respiration experiments (2025)
- HL Redox reactions and NAD (2025)
- Glycolysis Link reaction & Krebs Cycle HL (2025)
- Electron transport chain (2025)
- C1.3 Photosynthesis - Activities
- Photosynthesis Theory (2025)
- Chromatography & absorption spectrum (2025)
- Limiting factors and experiments (2025)
- Light Dependent Reactions (2025)
- Chloroplasts structure & chemiosmosis (2025)
- Light Independent Reactions (2025)
- D1.1 DNA Replication - Activities
- D1.2 Protein synthesis - Activities
- Transcription of DNA into mRNA (2025)
- Translation of mRNA into Amino Acids (2025)
- Base substitution mutation (2025)
- Transcription - extras for HL (2025)
- Translation & ribosome binding sites (2025)
- D1.3 Mutation & gene editing - Activities
- Cells - Activities
- A2.1 Origin of cells - Activities
- A2.2 Cell structure - Activities
- Cell theory & cell structures (2025)
- Prokaryote cells (2025)
- Yoghurt and milk bacteria experiment (2025)
- Eukaryotic Cell Ultrastructure (2025)
- Cell Types Activity (2025)
- Endosymbiosis - Nature of Science (2025)
- Unicellular v Multicellular (2025)
- Scientific Investigation into making yoghurt (2025)
- A2.3 Viruses - Activities
- B2.1 Membranes - Activities
- Membrane Structure (2025)
- Membrane transport models (2025)
- Onion cell plasmolysis experiment (2025)
- Membrane Permeablility Experiment (2025)
- Membrane lipids (2025)
- Further Membrane Structure (2025)
- B2.2 Organelles - Activities
- B2.3 Specialised Cells - Activities
- C2.1 Chemical signalling - Activities
- Receptors & binding sites (2025)
- Cell signalling molecules (2025)
- Types of receptors (2025)
- Cell signalling & gene expression (2025)
- C2.2 Neural signalling - Activities
- Neurons and resting potential (2025)
- Action potentials (2025)
- Synapses (2025)
- Propagation of action potentials HL (2025)
- Excitatory and inhibitory synaptic transmission HL (2025)
- Pain & consciousness HL (2025)
- D2.1 Cell & nuclear division - Activities
- Cell division & cytokinesis (2025)
- Mitosis and the Cell Cycle (2025)
- Introduction to Meiosis (2025)
- Meiosis as a source of variation (2025)
- Control of cell cycle & cancer HL (2025)
- D2.2 Gene expression - Activities
- D2.3 Water potential - Activities
- Organisms - Activities
- A3.1 Diversity of organisms - Activities
- Species & binomial names (2025)
- Species & their karyograms (2025)
- Activity 1 - Species & chromosomes - model answers
- Activity 2 - Related species karyotype - model answers
- Activity 3 - Human chromosome #2 - model answers
- Genome Projects (2025)
- Biodiversity of species & DNA
- A3.2 Classification - Activities
- Classification of organisms (2025)
- Intro to cladistics (2025)
- Reclassifying using DNA, cladistics & rRNA (2025)
- B3.1 Gas Exchange - Activities
- Gas exchange surfaces (2025)
- Mammalian lungs (2025)
- Gas exchange in plants (2025)
- Adaptations of haemoglobin HL (2025)
- B3.2 Transport - Activities
- Blood vessels (2025)
- Pulse rate and coronary heart disease (2025)
- Transport in plants (2025)
- The human heart HL (2025)
- The lymphatic system & tissue fluid HL (2025)
- Root pressure & translocation HL (2025)
- B3.3 Muscles & motility - Activities
- Movement & locomotion (2025)
- Contraction & relaxation of muscles (2025)
- The skeleton & joints (2025)
- C3.1 Integration of body systems - Activities
- Feedback & control of body functions (2025)
- Systems integration (2025)
- The brain (2025)
- Conscious & unconscious processes (2025)
- The endocrine system (2025)
- Tropisms (2025)
- Phytohormones (2025)
- C3.2 Defence against disease - Activities
- Pathogens & the first line of defense (2025)
- Innate & adaptive immune system (2025)
- Antibiotics & vaccination (2025)
- HIV and AIDS (2025)
- COVID-19 pandemic (2025)
- D3.1 Reproduction - Activities
- Asexual & Sexual reproduction
- Anatomy of human reproductive systems (2025)
- Hormones & the menstrual cycle (2025)
- Reproduction in flowering plants (2025)
- Cross pollination & seed dispersal (2025)
- Gamete formation (2025)
- Fertilization & blastocyst HL (2025)
- Hormones in IVF (2025)
- Pregnancy and birth (2025)
- D3.2 Inheritance - Activities
- Theoretical genetics intro (2025)
- Phenotypic plasticity & recessive alleles (2025)
- Theoretical Genetics 2 (2025)
- Model answers: Co-dominance & Multiple Alleles
- Model answers - further questions on co-dominant and multiple alleles
- Sex Linked Genes (2025)
- Polygenic Inheritance (2025)
- Di-Hybrid Crosses HL (2025)
- Gene Linkage 1 (2025)
- Gene Linkage 2 (2025)
- D3.3 Homeostasis - Activities
- Ecosystems - Activities
- A4.1 Evolution & speciation - Activities
- Evolution introduction (2025)
- Speciation & Adaptive radiation (2025)
- Speciation & reproductive isolation (2025)
- Polyploidy (2025)
- A4.2 Conservation of biodiversity - Activities
- Biodiversity & species extinction (2025)
- Loss of biodiversity (2025)
- Conservation of biodiversity (2025)
- B4.1 Adaptation to env - Activities
- Range of tolerance lab (2025)
- Rocky shore - abiotic factors
- Limiting factors - model answers (2025)
- Sand dune transect - model answers (2025)
- Coral reef formation (2025)
- Terrestrial Biomes (2025)
- B4.2 Ecological niches - Activities
- Modes of nutrition (2025)
- Animal adaptations (2025)
- Plant adaptations (2025)
- Fundamental and realised niches (2025)
- Ecology mini investigation (copy)
- C4.1 Populations & communities - Activities
- Quadrat sampling of populations (2025)
- Lincoln Index activities (2025)
- Population growth curves (2025)
- Describing communities (2025)
- Invasive species (2025)
- Predator prey relationships (2025)
- C4.2 Transfers of energy - Activities
- Energy in ecosystems (2025)
- Food Webs (2025)
- Modelling energy with pyramid diagrams (2025)
- Energy flow - IB style qns - Model answers (copy)
- Energy flow - IB style - model answers (copy)
- Grasshoppers questions model answers (copy)
- Constructing a Carbon Cycle (2025)
- Carbon dioxide in the atmosphere (2025)
- D4.1 Natural selection - Activities
- Variation & overproduction (2025)
- Sexual selection examples (2025)
- Gene pools (2025)
- Evolution & Hardy-Weinberg equation (2025)
- D4.2 Stability & change - Activities
- Stability ecosystems & mesocosms (2025)
- Sustainability (2025)
- Eutrophication & Biomagnification (2025)
- Microplastic pollution & rewilding (2025)
- Succession (2025)
- D4.3 Climate change - Actvities