PowerPoint presentation and worksheet on the nervous system for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Next topic The Brain: https://www.tes.com/teaching-resource/resource-12361785 Content Covered: Parts of the nervous system Neurons Synapses Reflexes Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Nervous system lesson GCSE Biology https://www.tes.com/teaching-resource/resource-12960383

PowerPoint presentation and worksheet on respiration for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus but is also applicable to other courses. Next topic The Nervous System: https://www.tes.com/teaching-resource/resource-12361294 Content Covered: Processes which use energy from respiration Aerobic vs anaerobic respiration Exercise Anaerobic respiration in plants and yeast Oxygen debt Pulse and breathing rate Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on the respiratory system for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Leads on to Circulatory System: https://www.tes.com/teaching-resource/circulatory-system-slides-and-worksheet-gcse-biology-aqa-12340179 Content Covered: Thorax anatomy (lungs, diaphragm, bronchus, bronchioles, alveoli) Gas exchange in the body Calculating breathing rate Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Lungs lesson https://www.tes.com/teaching-resource/resource-12866802

PowerPoint presentation and worksheet on plant hormones for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Related topic Plant Disease: https://www.tes.com/teaching-resource/resource-12357901 Content Covered: Ethene Gibberellin Auxins Phototropism and geotropism Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on food chains and trophic levels for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Food chains and food webs -Producers, primary consumers, secondary consumers and tertiary consumers -Biomass -Predators and prey -Trophic levels -Herbivores, carnivores and omnivores -Apex predators -Predator/prey cycles Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on competition and adaptation for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Competition for resources -Structural adaptation -Behavioural adaptation -Functional adaptation -Adaptation of microorganisms -Interdependence -Stable communities Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on pyramids of biomass and biomass transfer for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Why food chains are short -Loss of biomass between trophic levels -Loss of energy between trophic levels -Pyramids of biomass and pyramids of numbers -Calculating biomass loss between levels -Calculating efficiency of biomass transfer between levels -Drawing pyramids of biomass to scale Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Biomass Lesson GCSE Biology https://www.tes.com/teaching-resource/resource-12857063

PowerPoint presentation and worksheet on decay and biogas for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Decomposers and scavengers -Fertiliser production -Rate of decay -The effect of water availability, temperature, oxygen availability and decay organisms on rate of decomposition -Examples of biomes and their impact on decomposition -Aerobic and anaerobic decay -Methane as a biofuel -Generators (aka fermenters or digestors) -Batch biogas generators and continuous biogas generators -Inlets and outlets Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on food security and farming for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Pyramids of Biomass (https://www.tes.com/teaching-resource/resource-12648627) Content Covered: -Definition of food security -Factors affecting food security -Population increase -Diet and importing food -Impact of war on food security -Environmental change -New pests and pathogens -Cost of farming -Sustainable farming and efficient food production -Bioethics: restricting the movement of farm animals for more efficient production of food Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on biotechnology for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Food Security and Farming (https://www.tes.com/teaching-resource/resource-12648627) Content Covered: -Genetically engineering bacteria to produce human insulin -Genetically engineering crops -Producing meat substitutes from fungi (mycoprotein) Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Biotechnology lesson GCSE biology https://www.tes.com/teaching-resource/resource-12857082

PowerPoint presentation and worksheet on microscopy for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource covers the AQA Biology GCSE syllabus. There is a free accompanying resource covering the onion cell microscopy practical: https://www.tes.com/teaching-resource/microscopy-practical-onion-cells-12329755 Content Covered: Light microscopes Electron microscopes Resolution vs magnification Calculations Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Microscopy lesson https://www.tes.com/teaching-resource/resource-12829559

PowerPoint presentation and worksheet on active transport for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus but is also applicable to other courses. Next topic Transpiration and Translocation: https://www.tes.com/teaching-resource/resource-12342331 This task assumes that diffusion and osmosis have already been covered. Free resource available: https://www.tes.com/teaching-resource/diffusion-and-osmosis-with-worksheet-gcse-biology-aqa-12335213 Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Active transport lesson https://www.tes.com/teaching-resource/resource-12831984

PowerPoint presentation and worksheet on control of body temperature for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus but is also applicable to other courses. Next topic The Endocrine System: https://www.tes.com/teaching-resource/resource-12362835 Content Covered: Recap enzymes and homeostasis Negative feedback control of body temperature The thermoregulatory center Hot and cold skin responses Frostbite Antagonistic effectors Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on stem cells for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Leads on to Microscopy: https://www.tes.com/teaching-resource/microscopy-slides-and-worksheet-gcse-biology-aqa-12332237 Content Covered: Embryonic and adult stem cells Plant stem cells Bioethics Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Stem cells lesson https://www.tes.com/teaching-resource/resource-12830214

PowerPoint presentation and worksheet on the circulatory system for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Leads on to Health and Disease: https://www.tes.com/teaching-resource/health-and-disease-slides-and-worksheet-gcse-biology-aqa-12337857 and Cardiovascular Disease: https://www.tes.com/teaching-resource/cardiovascular-disease-slides-and-worksheet-gcse-biology-aqa-12344623 Content Covered: Double circulatory system Arteries, veins and capillaries Calculating rate of blood flow Red blood cells, white blood cells, plasma and platelets Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Circulatory system lesson https://www.tes.com/teaching-resource/resource-12866975

PowerPoint presentation and worksheet on mitosis for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Leads on to Binary Fission: https://www.tes.com/teaching-resource/binary-fission-slides-and-worksheet-gcse-biology-aqa-12318380 Content Covered: Chromosomes The cell cycle Mitosis Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Mitosis lesson: https://www.tes.com/teaching-resource/resource-12830872

PowerPoint presentation and worksheet on sexual and asexual reproduction for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Content Covered: Sexual and asexual reproduction Gametes Flowering plants Asexual reproduction in plants (runners, tubers and bulbs) Malaria and fungi Pros and cons of sexual reproduction Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on cloning for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Evolution. (https://www.tes.com/teaching-resource/resource-12557498) Next topic Genetic Engineering: https://www.tes.com/teaching-resource/resource-12633773 Content Covered: -Revision of meristems and therapeutic cloning from previous topics -Tissue culture cloning -Cuttings -Artificial twinning -Cloning adult animals -Bioethics of cloning Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on enzymes for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Leads on to Digestive Enzymes: https://www.tes.com/teaching-resource/digestive-enzymes-slides-and-worksheet-gcse-biology-aqa-12336629 Content Covered: Enzymes overview Active sites and substrates Lock and key model vs. induced fit model Effect of pH and temperature Denaturation Calculating reaction rate Digestive enzymes are covered in a separate resource which can be downloaded for free here: https://www.tes.com/teaching-resource/digestive-enzymes-with-worksheet-gcse-biology-aqa-12336629 Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Enzymes lesson https://www.tes.com/teaching-resource/resource-12842558 Enzymes revision lesson (theory) https://www.tes.com/teaching-resource/resource-12903132 Enzymes revision lesson (practical) https://www.tes.com/teaching-resource/resource-12844622

PowerPoint presentation and worksheet on genetic engineering for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Cloning. (https://www.tes.com/teaching-resource/resource-12625511) Next topic Fossils and Classification https://www.tes.com/teaching-resource/resource-12634123 COVER IMAGE: Ingrid Moen (et al) Gene expression in tumor cells and stroma in dsRed 4T1 tumors in eGFP-expressing mice with and without enhanced oxygenation.  BMC Cancer. 2012 Content Covered: -Uses for genetic engineering -GM crops -Pros and cons of genetic modification -Gene therapy -Genetic engineering method overview -Insulin producing bacteria -Genetic modification of multicellular organisms Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo