Biology study guides

A deep-dive Edexcel GCSE Biology guide to Topic 1 Key concepts in biology. Covers eukaryotic and prokaryotic cell structure, specialised cells, microscopy and the magnification equation, enzymes and the factors affecting them, the food tests, and transport by diffusion, osmosis and active transport, with the core practicals and exam patterns.

A deep-dive Edexcel GCSE Biology guide to Topic 2 Cells and control. Covers mitosis and the cell cycle, cancer, growth and percentile charts, differentiation and stem cells, neurones and the reflex arc, and (Biology only) the brain, brain scans and the eye, with the exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 3 Genetics. Covers sexual and asexual reproduction, meiosis, DNA structure and the genome, protein synthesis, monohybrid inheritance with Punnett squares and pedigrees, sex determination, variation and mutation, and the Human Genome Project, with the calculations and exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 4 Natural selection and genetic modification. Covers Darwin and Wallace, evolution by natural selection, antibiotic resistance, the evidence for human evolution, the pentadactyl limb, classification and the three domains, selective breeding, tissue culture and genetic engineering, with the exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 5 Health, disease and the development of medicines. Covers communicable and non-communicable disease, the four pathogen types, how pathogens spread, plant defences, the body's defences, the specific immune system, immunisation, antibiotics and the development of new medicines, with the core practical and exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 6 Plant structures and their functions. Covers photosynthesis and limiting factors, the inverse square law, root hair cells, xylem and phloem, the leaf, transpiration and translocation, and (Biology only) plant adaptations and plant hormones, with the core practical and exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 7 Animal coordination, control and homeostasis. Covers the endocrine system, adrenalin and thyroxine, the menstrual cycle, contraception and assisted reproduction, blood glucose control and diabetes, and (Biology only) thermoregulation and the kidney, with the calculations and exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 8 Exchange and transport in animals. Covers surface area to volume ratio and exchange surfaces, the alveoli, Fick's law, the blood and blood vessels, the heart and circulation, respiration, and cardiac output, with the core practical and exam patterns Edexcel repeats.

A deep-dive Edexcel GCSE Biology guide to Topic 9 Ecosystems and material cycles. Covers the levels of organisation, abiotic and biotic factors, interdependence, sampling with quadrats and transects, energy transfer and biomass, biodiversity and human impact, food security, and the carbon, water and nitrogen cycles with decomposition, with the core practical and exam patterns Edexcel repeats.