PowerPoint presentation and worksheet on deforestation, land use and protecting ecosystems for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Uses for land -Deforestation meaning -Loss of biodiversity from deforestation and draining peat bogs -Release of carbon from deforestation and draining peat bogs -Habitat protection -Waste reduction -Preventing global warming -Breeding programmes -Economic cost of protecting biodiversity -Biodiversity and food security Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Deforestation and land use lesson GCSE biology https://www.tes.com/teaching-resource/resource-12856543

PowerPoint presentation and worksheet on DNA, protein synthesis and mutations 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 Reproduction: https://www.tes.com/teaching-resource/resource-12376794 Content Covered: DNA structure Protein synthesis Human genome mapping Mutations (insertions, deletions and substitutions) 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 carbon cycle for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Forms of carbon in living organisms -Recap of photosynthesis -Carbon movement through the food chain -Carbon release by respiration -Carbon release by decomposers -Carbon release by combustion -Overview of the carbon cycle -Guide to identifying processes in carbon cycle diagrams 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 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 global warming for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -What is global warming? -Sea levels rising -More frequent extreme weather -Loss of biodiversity -Changes in species distribution -Natural greenhouse effect -Climate change caused by human activity -Carbon dioxide and methane 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 antibiotic resistance 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) Content Covered: -Emergence of resistant strains by mutation -Population growth of antibiotic resistant bacteria through natural selection -Misuse of antibiotics -Development of new antibiotics 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 abiotic and biotic factors 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 Competition and Adaptation (https://www.tes.com/teaching-resource/-12635825) Content Covered: -Types of abiotic factors -Adaptation to abiotic factors -Effect of changes in abiotic factors -Effect of abiotic factors on plants -Changes in biotic factors and the effect on an ecosystem -Examples of cane toads and grey squirrels 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 water cycle for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Evaporation and transpiration -Condensation and cloud formation -Precipitation -Overview of the water cycle 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 genetic 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 Inherited Disoders: https://www.tes.com/teaching-resource/resource-12405728 Content Covered: Alleles Homozygous and heterozygous Both types of genetic diagram covered in the course with practice questions and worked examples 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 X and Y chromosomes 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: X chromosomes and Y chromosomes Meiosis and fertilisation Introduction to genetic diagrams using X and Y chromosomes as an example 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 variation and selective breeding for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource assumes some basic knowledge of sexual reproduction and inheritance. Next topic Evolution: https://www.tes.com/teaching-resource/resource-12557498 Content Covered: Genetic variation Environmental variation Selective breeding Causes of variation (mutation and sexual reproduction) Uses and disadvantages of selective breeding 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 digestive 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 the Respiratory System: https://www.tes.com/teaching-resource/respiratory-system-slides-and-worksheet-gcse-biology-aqa-12337350 Content Covered: Overview of the digestive system Proteases, lipases and carbohydrases Bile Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Digestive Enzymes Lesson https://www.tes.com/teaching-resource/resource-12903171

PowerPoint presentation and worksheet on the work of the monk Gregor Mendel 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 Variation and Selective Breeding: https://www.tes.com/teaching-resource/resource-12547790 Content Covered: Overview of Mendel’s work First and second generation crosses Relating Mendel’s work to later discoveries -See also “Genetic Diagrams” https://www.tes.com/teaching-resource/resource-12974524 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 speciation 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) Content Covered: -Definition of a species -Isolated populations -Geographical isolation -The work of Alfred Russel Wallace 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 environmental change 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 Chains and Trophic Levels (https://www.tes.com/teaching-resource/resource-12636420) Content Covered: -Meaning of distribution of organisms -Environmental changes causing distribution changes -Types of environmental changes -Examples of how temperature, soil composition, pollution and water availability can lead to distribution changes -Seasonal factors, geographic factors and human activity Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

Meiosis Slides and Worksheet (GCSE Biology AQA). PowerPoint presentation and worksheet on meiosis 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. 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 cell organisation 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 Enzymes: https://www.tes.com/teaching-resource/enzymes-slides-and-worksheet-gcse-biology-aqa-12345968 and Plant Cell Organisation: https://www.tes.com/teaching-resource/plant-cell-organisation-slides-and-worksheet-gcse-biology-aqa-12315439 Content Covered: Hierarchy of cell organisation from cell to organism Glandular, muscle and epithelial tissue The digestive system Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo NEW: Cell organisation lesson https://www.tes.com/teaching-resource/resource-12842264

PowerPoint presentation on metabolism and homeostasis 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. Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Homeostasis lesson GCSE biology https://www.tes.com/teaching-resource/resource-12960089

PowerPoint presentation and worksheet on adrenaline and thyroxine 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 the Endocrine System: https://www.tes.com/teaching-resource/resource-12362835 Content Covered: Adrenaline regulation of the flight or fight response Thyroxine regulation of metabolism Negative feedback graphs 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 plant diseases and defences 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. Related topic Photosynthesis: https://www.tes.com/teaching-resource/resource-12359219 Content Covered: Symptoms of plant diseases Diagnosing plant diseases Barrier, mechanical and chemical defences Mineral deficiencies Pests Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. New! Lessons on Plant Disease for GCSE Biology Plant disease and defences: https://www.tes.com/teaching-resource/resource-12949241 Revision lesson topics 1-4 Rose black Spot Case Study: https://www.tes.com/teaching-resource/resource-12953529