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Edexcel GCSE Biology Revision Notes

Our Edexcel GCSE Biology revision notes match the Edexcel exam board syllabus so you can be sure that you are revising the right topics. Broken down into smaller areas, these notes include simple explanations of concepts with examples and diagrams so you can master even the toughest of concepts.

Edexcel 1 - Key concepts in biology

Exercise & Metabolism – Metabolism (GCSE Biology)

Enzymes & Digestion – Enzyme Action: Factors that Affect it (GCSE Biology)

Enzymes & Digestion – Enzyme Action: Reaction Rates (GCSE Biology)

Enzymes & Digestion – Carbohydrates: Breakdown and Synthesis (GCSE Biology)

Enzymes & Digestion – Protein and Lipids: Breakdown (GCSE Biology)

Enzymes & Digestion – Enzymes: An Introduction (GCSE Biology)

Transport in Cells – Diffusion – (GCSE Biology)

Transport in Cells – Active Transport (GCSE Biology)

Transport in Cells – Measuring the Effects of Osmosis (GCSE Biology)

Transport in Cells – Osmosis (GCSE Biology)

Edexcel 2 - Cells and control

Meiosis – Mitosis and Meiosis (GCSE Biology)

The Eye – The Eye: Its Responses – (GCSE Biology)

The Eye – An Introduction (GCSE Biology)

The Brain – Treatments and Challenges (GCSE Biology)

The Brain – Electrical Stimulation and Scans (GCSE Biology)

The Brain – Structures of the Brain (GCSE Biology)

Synapses & Reflexes – Reflexes and the Reflex Arc (GCSE Biology)

Synapses & Reflexes – Synapses (GCSE Biology)

Structure & Function of Nervous System – Structures of the Nervous System (GCSE Biology)

Structure & Function of Nervous System – Functions of the Nervous System (GCSE Biology)

Edexcel 3 - Genetics

Variation – The Human Genome Project (GCSE Biology)

Variation – Variation and Its Causes (GCSE Biology)

Meiosis – Mitosis and Meiosis (GCSE Biology)

Inheritance – Experiments by Mendel (GCSE Biology)

Inheritance – Sex Determination (GCSE Biology)

Inheritance – Genetic Diagrams (GCSE Biology)

Inheritance – Genes and Inheritance (GCSE Biology)

Asexual and Sexual Reproduction – Sexual Reproduction: Pros and Cons (GCSE Biology)

Asexual and Sexual Reproduction – Asexual Reproduction: Pros and Cons (GCSE Biology)

Asexual and Sexual Reproduction – (GCSE Biology)

Edexcel 4 - Natural selection and genetic modification

Biotechnology – Biotechnology & GM Foods (GCSE Biology)

Classification – (GCSE Biology)

Fossils & Extinction – Evidence for Evolution: Fossils (GCSE Biology)

Fossils & Extinction – Fossil Formation (GCSE Biology)

Development and Understanding of Evolution – Evidence for Evolution: Resistant Bacteria (GCSE Biology)

Development and Understanding of Evolution – Theory of Speciation (GCSE Biology)

Development and Understanding of Evolution – Theory of Evolution: Darwin and Lamarck (GCSE Biology)

Variation – Cloning (GCSE Biology)

Variation – Genetic Engineering (GCSE Biology)

Variation – Selective Breeding (GCSE Biology)

Edexcel 5 - Health, disease and the development of medicines

Plant Disease & Defence – Chemical and Mechanical Plant Defences – (GCSE Biology)

Plant Disease & Defence – Physical Plant Defences (GCSE Biology)

Plant Disease & Defence – Identifying Plant Diseases (GCSE Biology)

Antibiotics – Monoclonal Antibodies in Disease Treatment and Research (GCSE Biology)

Antibiotics – Monoclonal Antibodies in Pregnancy Tests (GCSE Biology)

Antibiotics – Producing Monoclonal Antibodies (GCSE Biology)

Antibiotics – Developing Drugs: Trials and Placebos (GCSE Biology)

Antibiotics – Developing Drugs: Discovery and Development (GCSE Biology)

Antibiotics – Drug Resistance, Antivirals and Antiseptics (GCSE Biology)

Antibiotics – Drugs: Antibiotics and Painkillers (GCSE Biology)

Edexcel 6 - Plant structures and their functions

Organisation & Trophic Levels – Trophic Levels & Food Chains (GCSE Biology)

Plant Hormones – Commercial Use of Plant Hormones (GCSE Biology)

Plant Hormones – Tropisms: Phototropism & Geotropism (GCSE Biology)

Photosynthesis: The Inverse Square Law – (GCSE Biology)

Photosynthesis: Limiting Factors Affecting the Rate of Photosynthesis – (GCSE Biology)

Photosynthesis: An Introduction – (GCSE Biology)

Transpiration – Plant Water Loss (GCSE Biology)

Transpiration – Transpiration Rates (GCSE Biology)

Transpiration – Transpiration in Plants (GCSE Biology)

Transport in Plants – How Plants are Adapted for Photosynthesis (GCSE Biology)

Edexcel 7 - Animal coordination, control and homeostasis

Treating Infertility – IVF: Development and Treatment Issues (GCSE Biology)

Treating Infertility – Drugs, IVF and AI for Infertility (GCSE Biology)

Contraception – Hormonal Contraception: The Pill, Patches & Implants (GCSE Biology)

Contraception – Contraception and Non-Hormonal Contraception (GCSE Biology)

Hormones in Human Reproduction – The Menstrual Cycle: Hormonal Interactions (GCSE Biology)

Hormones in Human Reproduction – The Menstrual Cycle: Hormones (GCSE Biology)

Hormones in Human Reproduction – Puberty and Hormones (GCSE Biology)

Osmoregulation & The Kidney – Kidney Transplantation (GCSE Biology)

Osmoregulation & The Kidney – Kidney Failure and Dialysis (GCSE Biology)

Osmoregulation & The Kidney – Anti-Diuretic Hormone (GCSE Biology)

Edexcel 8 - Exchange and transport in animals

Exercise & Metabolism – Bodily Responses to Exercise (GCSE Biology)

Anaerobic Respiration – Animals (GCSE Biology)

Aerobic Respiration – (GCSE Biology)

Blood and Blood Vessels: Veins and Capillaries (GCSE Biology)

Blood and Blood Vessels – White Blood Cells and Platelets (GCSE Biology)

Blood and Blood Vessels – Plasma and Red Blood Cells (GCSE Biology)

Blood and Blood Vessels – Arteries (GCSE Biology)

The Circulatory System – Heart: Structure and Function (GCSE Biology)

Circulatory System – The Double Circulatory System (GCSE Biology)

The Lungs – (GCSE Biology)

Edexcel 9 - Ecosystems and material cycles

Food Security – Sustainable Fisheries (GCSE Biology)

Food Security – Farming Techniques (GCSE Biology)

Food Security – Food Production & Security (GCSE Biology)

REARRANGED ORDER – Mainatining Bioversity (GCSE Biology)

REARRANGED ORDER – Deforestation (GCSE Biology)

REARRANGED ORDER – Land Use & Destruction of Peat Bogs (GCSE Biology)

REARRANGED ORDER – Pollution and Global Warming (GCSE Biology)

Biodiversity – Human Population & Increasing Waste (GCSE Biology)

Biodiversity – (GCSE Biology)

Cycles – The Impact of Environmental Change (GCSE Biology)

FAQs

Read some of our most frequently asked questions and answers

How can I use my Edexcel GCSE Biology revision notes effectively?

Whether you have written your own notes or are using a textbook, it is important to actively learn what you are reading. It is not enough just to passively read these notes as your thoughts may wander off! Instead, organise your notes carefully and break down your revision into manageable pieces of time to ensure that you are revising effectively. Take breaks when you need them.

How long is the Edexcel GCSE Biology exam?

Candidates have a maximum time of 1 hour and 45 minutes for both Paper 1 and Paper 2. The papers consist of 10 questions and you need to answer all questions.

Is the Edexcel GCSE Biology exam hard?

Due to the amount of information to memorise, the Edexcel GCSE Biology exam can be considered hard. However, with a concise revision timetable and good organisation, it is possible to gain high marks on the Biology exam.