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 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 PowerPoint contains everything you need to teach the Theme/Unit C2.2 Neural signalling in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of over 100 slides and contains the followings: All the information the IB have included in the new spec. Exam tips Clear diagrams Summary videos Student research tasks Clearly identified HL and SL content Student checklist **Exam style questions Summary The following content is included: C2.2.1: Describe the structure of a neuron having a cell body with elongated nerve fibres of varying length projecting from it. C2.2.2: Describe the axon as a long single fibre helping in the conduction of electrical impulse and dendrites as multiple shorter fibres receiving and processing incoming signals. C2.2.3: Describe how energy from ATP drives sodium ions into the membrane causing depolarisation. C2.2.4: Explain the concept of membrane polarisation and membrane potential. C2.2.5: Explain the reasons for resting potential being negative. C2.2.6: Compare the speed in myelinated and non-myelinated fibres. C2.2.7: Explain the role of synapsis in communication between neurons. C2.2.8: Compare and contrast the mechanisms of neurotransmitter release in different types of synapses. C2.2.9: Analyse the factors that affect the magnitude and duration of excitatory postsynaptic potentials. C2.2.10: Describe the process of depolarisation and repolarisation during an action potential. C2.2.11: Evaluate the importance of action potential propagation in neural communication and information processing. C2.2.12: Explain the concept of an oscilloscope and its use in measuring neural activity. C2.2.13: Interpret and analyse oscilloscope traces of resting potentials and action potentials. C2.2.14: Describe the process of saltatory conduction in myelinated fibres. C2.2.15:Compare and contrast the speed and efficiency of action potential propagation in myelinated and unmyelinated fibres. C2.2.16: Describe the effects of exogenous chemicals on synaptic transmission, including drugs and toxins. C2.2.17: Analyse the factors that affect the magnitude and duration of inhibitory postsynaptic potentials. C2.2.18: Understand that multiple presynaptic neurons interact with all-or-nothing consequences in terms of postsynaptic depolarisation. C2.2.19:Understand that nerve endings have channels for positively charged ions, which open in response to a stimulus such as high temperature, acid or certain chemicals such as capsaicin in chilli peppers. C2.2.20:Explain that the entry of positively charged ions causes the threshold potential to be reached and propagation of nerve impulses. C2.2.21:Explain that consciousness is another example of the consequences of interaction.

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 Theme/Unit D3.3: Homeostasis in the new IB Biology specification. YouTube video is a preview of the full resource (does not include all slides) This Powerpoint consists of over 50 slides and contains the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: D3.3.1: Define the concept of homeostasis in relation to specific examples of variables. D3.3.2: Explain the role of negative feedback mechanisms in maintaining homeostasis. D3.3.3: Outline the role of pancreatic hormones in regulating blood glucose. D3.3.4: Outline the role of negative feedback mechanisms in regulating blood glucose. D3.3.5: Describe the physiological changes that form the basis of type 1 and type 2 diabetes. D3.3.6: Describe the roles of thermoreceptors and hypothalamus in regulating body temperature. D3.3.7: Outline the mechanisms in regulating human body temperature. D3.3.8: Define osmoregulation and excretion. D3.3.9: Explain the roles of the glomerulus, Bowman’s capsule and proximal convoluted tubule in excretion. D3.3.10: Outline the functions of the loop of Henle and collecting ducts. D3.3.11: Explain the effect of ADH on the permeability of the kidney tubules. D3.3.12: Describe examples of changes in blood supply in response to changes in activity.

This resource is perfect for a Year 9/10 class studying GCSE Mitosis. The lesson contains a starter tasks, recap on prior knowledge and student tasks with answers. The following content is covered: Starter tasks Recap of key information relating to genetics Why do cells divide? Different stages of mitosis (prophase, metaphase, anaphase and telophase) Identify the stages of mitosis from microscope images Student independent task Plenary task

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 Theme/Unit D2.1: Cell and nuclear division in the new IB Biology specification. YouTube video is a preview of the full resource (does not include all slides) This Powerpoint consists of over 90 slides and contains the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: D2.1.1:Outline how new cells can be generated by cell division. D2.1.2: Outline the process of cytokinesis in plant and animal cells. D2.1.3: Explain that not all cells undergo equal cytoplasmic division. D2.1.4: Outline the roles of mitosis and meiosis in eukaryotic cells. D2.1.5: Describe the shared features of mitosis and meiosis. D2.1.6: Describe the phases of mitosis. D2.1.7: Identify the stages of mitosis from photomicrographs. D2.1.8: Explain why meiosis is a reduction division. D2.1.9: Describe the stages of meiosis. D2.1.10: Describe the causes and consequences of non-disjunction. D2.1.11: Explain how meiosis generates genetic diversity. D2.1.12: Outline the need for cell proliferation. D2.1.13: Outline the phases of the cell cycle. D2.1.14: Describe the changes that occur in a cell during interphase. D2.1.15: Describe how cyclins control the cell cycle. D2.1.16: Explain the possible consequences of mutations in genes that control the cell cycle. D2.1.17: Calculate mitotic index and explain the difference in mitotic index between cancerous and non-cancerous tissue.

Complete unit of work for OCR A-level biology unit on Enzymes. Contains presentation, past paper questions, required practicals and end of unit assessments on the following topics: GCSE Enzymes recap Enzymes Enzyme mechanisms Enzymes and temperature Enzymes and pH/Buffers Effects of concentration on rate of reaction Standard deviation Enzyme inhibitors Co-enzymes and Co-factors End-product inhibition

This fantastic resources covers the GCSE and iGCSE content for the introduction to homeostasis. Formed of 25 slides, this lesson will take approximately 1-2hours to teach. It contains: Stater slider Definitions for all key words required Exam style questions with answers Introduction to how water, sugar, temperature and ions are controlled.

This fantastic resources covers the GCSE and iGCSE content for controlling blood sugar. Formed of 23 slides, this lesson will take approximately 2-3 hours to teach. It contains: Starter slide Key definitions Explanation of negative feedback for when blood sugar increase or decreases Type 1 and 2 diabetes Student tasks

This fantastic bundle consists of 6 lessons (over 70 slides). Each lesson contains a starter slide with answers, all key information, clear diagrams for students, case studies and clear experimental procedures. The following content is covered: Species and speciation Autotrophs and Heterotrophs Consumers, detritivores and saprotrophs Communities Ecosystems and nutrient cycling (mesocoms) Chi-squared test (step by step instructions)

This resource is perfect for a Year 9/10 class studying GCSE plant and animal cells. The lesson contains a starter tasks, recap on prior knowledge, student tasks with answers, exam style questions and calculation tasks. The following content is covered: Features of plant and animal cells Labelling plant and animal cells The different functions of the organelles Identifying cells from microscope images Magnification calculation questions Exam question and plenary tasks.

This resource is perfect for a Year 9/10 class studying GCSE Microscopy. The lesson contains a starter tasks, recap on prior knowledge, student tasks with answers, exam style questions and calculation tasks. The following content is covered: Starter task Parts of a microscope How to prepare a slide? Practical method Scientific drawings Calculating magnification (booklet) Plenary tasks

This resource is perfect for a Year 9/10 class studying GCSE Prokaryotic and Eukaryotic cells. The lesson contains a starter tasks, recap on prior knowledge, student tasks with answers and exam style questions. The following content is covered: Difference between eukaryotic and prokaryotic cells Labelling prokaryotic cells Use of bacteria and fungi Observing fungi under the microscope Converting between units (mm, micrometers and nanometers) Extended research on Mitochondrial diseases Plenary tasks

This resource is perfect for a Year 9/10 class studying GCSE diffusion. The lesson contains a starter tasks, student tasks with answers and exam style questions. The following content is covered: Starter task Key definitions with diagrams Factors affecting rate of diffusion Importance of diffusion in living organisms Exam questions Plenary tasks

This resource is perfect for a Year 9/10 class studying GCSE Active transport. The lesson contains a starter tasks, recap on prior knowledge, student tasks with answers and exam style questions. The following content is covered: Starter tasks Explanation of active transport with clear diagrams Student task (they create a diagram of active transport) Examples of active transport in plants and other mammals Comparison of active transport with diffusion and osmosis Exam style questions Plenary task with answers

This resource is perfect for a Year 9/10 class studying GCSE Osmosis. The lesson contains a starter tasks, recap on prior knowledge, student tasks with answers, exam style questions and practical tasks. The following content is covered: Explanation of osmosis Comparison of osmosis with diffusion How osmosis affects plants and animals cells Practical method on how Osmosis affects plant cells Exam questions Plenary