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 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 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 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 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 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 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

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 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 gas exchange for A-Level biology for teaching and revision. Key points from GCSE are recapped in the presentation. Content Covered: Gas exchange in humans Inspiration and expiration Gas exchange in fish Gas exchange in insects Gas exchange in plants Xerophytes 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 xylem and phloem for A-Level biology for teaching and revision. Key points from GCSE are recapped in the presentation. Content Covered: Xylem and phloem Transpiration Cohesion-Tension theory Rate of transpiration Potometers Translocation Mass flow hypothesis Autoradiography Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

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

Discussion exercise on assisted reproduction for teaching and revision. This resource follows the AQA Biology GCSE syllabus. Related topic The Menstrual Cycle: https://www.tes.com/teaching-resource/-12366008 Content Covered: Hormone therapy (LH and FSH) In vitro fertilisation (IVF) Intra-cytoplasmic sperm injection (ICSI) Bioethics Please note that this only covers the science and is not intended as a PSHE resource. 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 eye 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 Body Temperature: https://www.tes.com/teaching-resource/resource-12362801 Content Covered: Parts of the eye The iris reflex Accommodation (near and distant objects) Short- and long-sightedness Convex and concave lenses Other methods of vision correction 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 brain 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 Eye: https://www.tes.com/teaching-resource/resource-12362148 Content Covered: Brain structure and function Studying the brain 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 drugs and drug development for teaching and revision. This resource follows the AQA Biology GCSE syllabus. Leads on to Monoclonal Antibodies: https://www.tes.com/teaching-resource/monoclonal-antibodies-slides-and-worksheet-gcse-biology-aqa-12357328 Content Covered: Antibiotics Antibiotic resistance Drug discovery Preclinical and Clinical trials Animal testing Double-blind studies Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. New! Drugs Lesson GCSE Biology https://www.tes.com/teaching-resource/resource-12948723