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Biology (1BI0)
12 sections available · 48 chapters available
Free Biology (1BI0) revision notes for Pearson Edexcel GCSE (9-1) students. Each chapter covers a key topic with worked examples and practice prompts you can take straight into the thinka app.
Paper 1
Paper 2
Key concepts in biology (Papers 1 and 2)
Cell structures and specialised cells
Microscopes, magnification, size and scale
Enzymes and rates of reaction
Food tests and energy in food
Diffusion, osmosis and active transport
Working scientifically and the core practicals
Cells and control (Paper 1)
Mitosis and the cell cycle
Growth, percentile charts and stem cells
The brain and its investigation
Neurones, synapses and the reflex arc
The eye and eye defects
Working scientifically
Genetics (Paper 1)
Sexual and asexual reproduction, meiosis
DNA, the genome and DNA extraction
Protein synthesis and genetic variants
Monohybrid inheritance and Punnett squares
Sex determination and sex-linked disorders
Variation, mutation and the Human Genome Project
Natural selection and genetic modification (Paper 1)
Darwin, Wallace and natural selection
Evidence for evolution and human evolution
Classification: five kingdoms and three domains
Selective breeding and tissue culture
Genetic engineering, GM crops and food security
Health, disease and the development of medicines (Paper 1)
Health, communicable and non-communicable disease
Pathogens and the spread of infection
Plant diseases and plant defences
Human defences, the immune system and immunisation
Antibiotics, aseptic technique and culturing microorganisms
Developing new medicines and monoclonal antibodies
Cardiovascular disease and its treatment
Plant structures and their functions (Paper 2)
Photosynthesis and limiting factors
Leaf and root structure and adaptations
Transpiration, translocation, xylem and phloem
Plant hormones and their commercial uses
Animal coordination, control and homeostasis (Paper 2)
Hormones and the endocrine system
The menstrual cycle, contraception and ART
Thermoregulation and the skin
Blood glucose regulation and diabetes
The kidney, osmoregulation and treating kidney failure
Exchange and transport in animals (Paper 2)
Exchange surfaces, surface area to volume ratio and Fick's law
Blood, blood vessels and gas exchange
The heart, circulation and cardiac output
Aerobic and anaerobic respiration
Ecosystems and material cycles (Paper 2)
Ecosystems, abiotic and biotic factors
Fieldwork: quadrats, transects and population estimates
Energy transfer between trophic levels
Human impact, biodiversity and conservation
Carbon, water and nitrogen cycles
Decomposition, decay rates and food preservation
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