This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B3.1 Gas exchange in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 90 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B3.1.1: Outline the need for gas exchange in living organisms. B3.1.2: Describe properties of gas-exchange surfaces. B3.1.3: Explain how concentration gradients are maintained at exchange surfaces in animals. B3.1.4: Describe the adaptations of mammalian lungs for gas exchange. B3.1.5: Explain the process of ventilation. B3.1.6: Determine measurements of lung volumes. B3.1.7: Outline the adaptations of leaves for gas exchange. B3.1.8: Draw and label a plan diagram to show the distribution of tissues in a transverse section of a dicotyledonous leaf. B3.1.9: Outline the process of transpiration and the factors that affect the rate of transpiration. B3.1.10: Determine stomatal density. B3.1.11: Outline the adaptations of foetal and adult haemoglobin for the transport of oxygen. B3.1.12: Explain the Bohr shift and the benefits for respiring tissues. B3.1.13: Analyse and explain oxygen dissociation curves.

This resource consist of everything you will need to teach iGCSE Co-ordinated science (cambridge) B10 reproduction. This resource consists of 3 powerpoints (over 80 slides in total) and a student checklist. Approximately 8 lessons are needed to complete this unit. Lessons included: Sexual and asexual reproduction Reproduction in plants (structure of the flower, pollen, insect and wind pollination, fertilisation and germination) Sexual reproduction humans (male and femal reproductive system, menstrual cycle, fertilisation, gestation of foetus, HIV/AIDs) Each lesson consists: Starter tasks Clear diagrams and explanations Student questions with answers Research tasks Videos Student checklist

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B2.3 Cell specialisation in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 45 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B2.3.1: Explain how unspecialised cells form following fertilisation and how gradients impact gene expression for further development of the embryo. B2.3.2: Outline the properties of stem cells and their different capabilities to become different cell types. B2.3.3: Explain the function of stem cell niches and be able to describe bone marrow and hair follicles as examples of these. B2.3.4: Describe the size differences in various human cells. B2.3.5: Discuss the relationship between cells size and surface area in terms of the movement of material across a cell. B2.3.6: Identify and describe cell types that increase surface area-to-volume ratios B2.3.7: Describe specific adaptations that cells in the lung, heart, muscle and gonads have undergone to perform their functions.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B2.2 Organelles and compartmentalisation in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 49 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B2.2.1:State, with examples, that organelles are structures that are separate subunit of cells and perform a specific function. B2.2.2:Explain the advantages, using phagocytic vacuoles and lysosomes as examples, of the compartmentalisation of cytoplasm. B2.2.3: Explain the advantage of the separation of the nucleus and the cytoplasm in regard to protein synthesis. B2.2.4: Explain, using an annotated diagram, how the structure of the mitochondrion aids in the production of ATP. B2.2.5: Explain, using an annotated diagram, how the structure of the chloroplast aids in photosynthesis. B2.2.6: Describe the functional advantages of the double membrane around the nucleus in protein synthesis and cell division. B2.2.7: Describe the different roles of bound and free ribosomes. B2.2.8: Outline the function of the Golgi apparatus in the processing and transport of proteins. B2.2.9: Describe the role of vesicles in cells and the role of clathrin in the formation of vesicles.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B2.1 Membranes and membrane transport in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 62 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B2.1: Describe the formation of sheet-like bilayers in water by amphipathic lipids. B2.2: Explain the reasons behind the selective permeability of the lipid bilayer. B2.3: Discuss the movement of molecules by diffusion across the lipid bilayer. B2.4: Identify integral and peripheral proteins. B2.5: Discuss the role of aquaporins in transporting water. B2.6: Describe the structure and role of channel proteins. B2.7: Explain the importance of pump proteins in active transport. B2.8: Explain the role of facilitated diffusion and active transport in the selective permeability of membranes. B2.9Describe glycoproteins and glycolipids with respect to their structure and function. B2.10: Draw the fluid mosaic model of membrane structure. B2.11:Describe the role of lipids in membrane fluidity. B2:12: Discuss the role of cholesterol in membrane fluidity. B2.13: Differentiate between exocytosis and endocytosis. B2.14: Describe the role of gated channels. B2.15: Explain the mechanisms of direct active and indirect active transport. B2.16: State the role of cell-adhesion molecules. B2.17:  Identify the different types of cell junctions.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B1.2 Proteins in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 55 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content The following content is included: B1.2.1: Generalised structure of an amino acid. B1.2.2: Condensation reactions produce dipeptides and longer polypeptides. B1.2.3: Dietary requirements of amino acids B1.2.4: Infinite possible variety of polypeptide chains B1.2.5: Effects of pH and temperature on proteins structure. B1.2.6: chemical diversity in the R-groups of amino acids is the basis for the immense diversity in protein structures (HL only) B1.2.7: Impact of the primary structure on the conformation of proteins (HL only) B1.2.8: Pleating and coiling of secondary structure of proteins (HL only) B1.2.9: Dependence of tertiary structure on hydrogen bonds, ionic bonds, disulphide covalent bonds and hydrophobic interactions (HL only) B1.2.10: Effects of polar and non-polar amino acids on the tertiary structure (HL only) B1.2.11: Quaternary structure of conjugated and non-conjugated proteins (HL only B1.2.12: Relationships of form and function for globular and fibrous proteins (HL only)

FREE TASTER LESSON, please see my shop for high quality paid resources. This PowerPoint contains everything you need to teach the A1.1 water in the new IB Biology specification for both HL and SL. This Powerpoint consists of 43 slides and contains the following: Starter task All information is clearly presented Student tasks with answers All key terms Notes for students Exam style questions with answers Student checklist (great for revision at the end of the unit) The following content is covered: A1.1: Water as a medium of life A1.2: Hydrogen bonds are a consequence of polar covalent bonds within a water molecule. A1.3: Cohesion of water molecules due to hydrogen bonds and the consequences for organisms A1.4: Adhesion of water molecules to polar or charged materials and the impact for organisms. A1.5: Solvent properties of water linked to its role as a medium for metabolism and transport in plants and animals A1.6: Physical properties of water and the consequences for animals in aquatic habitats. A1.7: Extraplanetary origins of water on Earth and reasons for it´s retention (HL ONLY) A1.8: Relationship between the search for extra-terrestrial life and the presence of water (HL ONLY)

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A3.2 Classification and cladistics in the new IB Biology specification (HL only) This Powerpoint consists of 50 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content The following content is included: A3.2.1: Explain why a classification system is needed. (HL only) A3.2.2: Describe difficulties with the traditional hierarchy of taxa. (HL only) A3.2.3: Describe the advantages of basing classification on evolutionary relationships. (HL only) A3.2.4: Define a clade. (HL only) A3.2.5: Explain how the gradual accumulation of sequence changes can be used to determine the time since a common ancestor diverged into extant species (HL only) A3.2.6: Describe how base or amino acid sequences can be used in the construction of cladograms. (HL only) A3.2.7: Deduce evolutionary relationships from cladograms. (HL only) A3.2.8: Describe how cladistics can be used to assess whether classifications correspond to evolutionary relationships. (HL only) A3.2.9: Describe how the analysis of rRNA base sequences led to the introduction of the domain taxa. (HL only)

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A4.2 Ecosystems in the new IB Biology specification This Powerpoint consists of 51 slides and contains the followings: All the information ( HL and SL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content Student checklist The following content is included: A4.2.1: Identify the levels of biodiversity – ecosystem diversity, species diversity and genetic diversity. A4.2.2: Compare the current number of species and past levels of biodiversity. A4.2.3: Describe the causes of anthropogenic species extinction. A4.2.4: Analyse case studies to understand the range of causes of extinction. A4.2.5: Describe the causes of ecosystem loss. A4.2.6: Analyse case studies to understand the range of causes of ecosystem loss. A4.2.7: Analyse evidence for a biodiversity crisis from different sources. A4.2.8: Describe the causes of the current biodiversity crisis. A4.2.9: Describe different ways to conserve biodiversity. A4.2.10: Know the mechanism of conservation prioritisation.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A4.1 Evolution and speciation in the new IB Biology specification This Powerpoint consists of 56 slides and contains the followings: All the information ( HL and SL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content Student checklist The following content is included: A4.1.1: Evolution as change in heritable characteristics of a population. A4.1.2-5: Evidence for evolution A4.1.5-7: Speciation A4.1.8: Types of speciation: allopatric vs sympatric (HL only) A4.1.9-10: Adaptive radiation and barriers to hybridisation (HL only). A4.1.11: Hybridisation and polypoid in speciation (HL only)

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach Theme/Unit B1.1 Carbohydrates and Lipids in the new IB Biology specification. This Powerpoint consists of 99 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content The following content is included: B1.1.1: Chemical properties of Carbon atoms allowing for the formation of diverse compounds upon which life is based. B1.1.2: Production of macromolecules by condensation reactions which link monomers to form polymers. B1.1.3: Digestion of polymers into monomers via hydrolysis reactions. B1.1.4: Form and function of monosaccharides. B1.1.5: Polysaccharides as a energy storage compound. B1.1.6: Structure of cellulose related to its function in plants. B1.1.7: Role of glycoproteins in cell recognition B1.1.8: Hydrophobic properties of water. B1.1.9: Formation of triglycerides and phospholipids by condensation reactions. B1.1.10: difference between saturated, monounsaturated and polyunsaturated fatty acids. B1.1.11: Triglycerides in adipose tissue as a storage of energy and insulation. B1.1.12: Formation of the phospholipid bilayer due to the hydrophobic and hydrophilic regions of phospholipids B1.1.13: The ability of steroid hormones to pass through phospholipid bilayers.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A3.1 Diversity of Organisms in the new IB Biology specification. This Powerpoint consists of 93 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content The following content is included: A3.1.1: variation between organisms as a defining feature of life. A3.1.2: Species as groups of organisms with shared traits. A3.1.3: Binominal system for naming organisms A3.1.4: Biological species concept A3.1.5: Difficulties distinguishing between populations and species due to divergence and non-interbreeding populations during speciation. A3.1.6: Diversity in chromosome numbers of plant and animal species. A3.1.7: Karyotyping and karyograms A3.1.8: Unity and diversity of genomes between species. A3.1.8: Diversity of eukaryotic genomes A3.1.10: Comparison of genome sizes A3.1.11: Current and potential future uses of whole genomic sequencing. A3.1.12: Difficulties applying the biological species concept to asexually reproducing species and to bacteria that have horizontal gene transfer (HL only). A3.1.13: Chromosome number as a shared trait within a a species. A3.1.14: Engagement with local plant or animal species to develop dichotomous keys. A3.1.15: Identification of species from environmental DNA in a habitat using barcodes.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A2.3 Viruses in the new IB Biology specification for HL This Powerpoint consists of 34 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content Student checklist The following content is included: A2.3.1: Structural features common to viruses A2.3.2: Diversity of structures in viruses. A2.3.3: Lytic cycle of a virus A2.3.4: Lysogenic cycle of a virus A2.3.5: Evidence for several origins of viruses from other organisms A2.3.6: Rapid evolution in viruses