GCSE Biology Revision
Master individual topics with our exam-style questions. These pages are designed for a quick self-check before you dive into the full app.
Cell Biology
Cell Structure
Topic Practice
Animal Cell Structure
Topic Practice
Plant Cell Structure
Topic Practice
Bacterial Cell Structure
Topic Practice
Microscopy Methods
Topic Practice
Magnification Formula
Topic Practice
Cell Differentiation
Topic Practice
Stem Cells & Embryos
Topic Practice
The Cell Cycle & Mitosis
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Binary Fission
Topic Practice
Diffusion
Topic Practice
Osmosis
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Active Transport
Topic Practice
Eukaryotic vs Prokaryotic Cells
Topic Practice
Mitosis vs Meiosis
Topic Practice
Electron Microscopy
Topic Practice
Preparing Microscope Slides
Topic Practice
Factors Affecting Diffusion
Topic Practice
Active Transport vs Diffusion
Topic Practice
Chromosomes & DNA
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Root Hair Cell Specialisation
Topic Practice
Sperm & Nerve Cell Specialisation
Topic Practice
Meristems & Plant Cloning
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Therapeutic Cloning
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Osmosis Required Practical
Topic Practice
Percentage Change in Mass
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Culturing Microorganisms
Topic Practice
Size, Scale & Units
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Exchange Surfaces
Topic Practice
Organisation
Hierarchy of Organisation
Topic Practice
Lungs & Gas Exchange
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Hierarchy of the Digestive System
Topic Practice
The Liver and Bile
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The Pancreas and Enzymes
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Amylase and Carbohydrates
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Protease and Proteins
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Lipase and Fats
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The Lock and Key Theory
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pH and Amylase Practical
Topic Practice
Benedict's Test for Sugars
Topic Practice
Iodine Test for Starch
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Biuret Test for Proteins
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Ethanol Emulsion Test
Topic Practice
Double Circulatory System
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Natural and Artificial Pacemakers
Topic Practice
Atria vs Ventricles
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The Role of Plasma
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Red Blood Cell Adaptations
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Phagocytes and Lymphocytes
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Heart Valve Replacement
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Statins and Stents for CHD
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Artificial Hearts
Topic Practice
Types of Cancer Tumours
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Risk Factors for Cancer
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Lifestyle and Health
Topic Practice
Xylem vs Phloem Transport
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Investigating Transpiration Rate
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Root Hair Cell Structure & Uptake
Topic Practice
Calculating Transpiration Rate
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Food Tests: Reagents & Results
Topic Practice
Interpreting Enzyme Graphs
Topic Practice
Components of Blood
Topic Practice
Structure of Blood Vessels
Topic Practice
The Human Heart
Topic Practice
Heart Disease Treatments
Topic Practice
Pacemakers & Artificial Hearts
Topic Practice
Lifestyle and Risk Factors
Topic Practice
Cancer: Tumours and Risks
Topic Practice
Plant Organs and Systems
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Plant Tissues
Topic Practice
The Transpiration Stream
Topic Practice
Translocation
Topic Practice
Infection
Measles Virus and Symptoms
Topic Practice
HIV and AIDS Explained
Topic Practice
Tobacco Mosaic Virus (TMV)
Topic Practice
Salmonella Food Poisoning
Topic Practice
Gonorrhoea Symptoms and Treatment
Topic Practice
Rose Black Spot Disease
Topic Practice
Malaria: Protists and Vectors
Topic Practice
Mosquitoes as Vectors
Topic Practice
The Skin as a Barrier
Topic Practice
Nose, Trachea and Bronchi Defences
Topic Practice
Stomach Acid and Digestion
Topic Practice
Phagocytosis Explained
Topic Practice
Antibodies and Antigens
Topic Practice
How Antitoxins Work
Topic Practice
The Science of Vaccination
Topic Practice
Understanding Herd Immunity
Topic Practice
Antibiotics vs Painkillers
Topic Practice
The Rise of Superbugs
Topic Practice
Plants and Microbes in Medicine
Topic Practice
Preclinical Testing Stages
Topic Practice
The Three Phases of Clinical Trials
Topic Practice
Placebos and Double-Blind Trials
Topic Practice
Production of Monoclonal Antibodies
Topic Practice
Uses of Monoclonal Antibodies
Topic Practice
How to Detect Plant Disease
Topic Practice
Plant Physical Defences
Topic Practice
Plant Chemical Defences
Topic Practice
Plant Mechanical Defences
Topic Practice
Plant Mineral Deficiencies
Topic Practice
Culturing Microorganisms Practical
Topic Practice
Calculating Zones of Inhibition
Topic Practice
Aseptic Techniques in Microbiology
Topic Practice
Preparing Agar Plates
Topic Practice
Bioenergetics
The Photosynthesis Equation
Topic Practice
Photosynthesis Rate Practical
Topic Practice
Light Intensity as a Limiting Factor
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Temperature and Photosynthesis
Topic Practice
CO2 Concentration as a Limiting Factor
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Chlorophyll as a Limiting Factor
Topic Practice
The Inverse Square Law
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Storage of Glucose as Starch
Topic Practice
Cellulose and Protein Synthesis
Topic Practice
Aerobic Respiration Equation
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Anaerobic Respiration in Muscles
Topic Practice
Fermentation in Yeast
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Aerobic vs Anaerobic Respiration
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Heart Rate and Exercise
Topic Practice
Breathing Rate and Volume
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Oxygen Debt and Recovery
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The Liver and Metabolism
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Investigating Respiration Rate
Topic Practice
Calculating Rates of Photosynthesis
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Economic Limiting Factors
Topic Practice
Mitochondria: Powerhouses of the Cell
Topic Practice
Exothermic and Endothermic Reactions
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Proteins and Metabolism
Topic Practice
Photosynthesis: Energy Transfer
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Investigating Rate Factors
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Uses of Glucose and Storage
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Aerobic Respiration
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Homeostasis
The Human Brain
Topic Practice
Eye Structure & Defects
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Reaction Time Required Practical
Topic Practice
Studying the Brain
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Accommodation: Focusing the Eye
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Correcting Vision Defects
Topic Practice
Mechanisms of Temperature Control
Topic Practice
The Role of Insulin
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The Role of Glucagon
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Type 1 vs Type 2 Diabetes
Topic Practice
Inside the Kidney
Topic Practice
ADH and Water Regulation
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Kidney Dialysis Explained
Topic Practice
Dialysis vs Transplant
Topic Practice
Menstrual Cycle Hormone Feedback
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Comparing Contraceptive Methods
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How IVF Works
Topic Practice
Auxins and Plant Growth
Topic Practice
Investigating Tropisms Practical
Topic Practice
Gibberellins and Ethylene
Topic Practice
Negative Feedback Explained
Topic Practice
Geotropism: Root Responses to Gravity
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Commercial Uses of Plant Hormones
Topic Practice
The Human Nervous System
Topic Practice
Reflex Arcs & Synapses
Topic Practice
Structure of the Brain
Topic Practice
Structure & Function of the Eye
Topic Practice
Control of Body Temperature
Topic Practice
Adrenaline & Thyroxine
Topic Practice
The Menstrual Cycle Hormones
Topic Practice
Comparing Contraception Methods
Topic Practice
Infertility Treatments: IVF
Topic Practice
Inheritance
Evidence for Evolution
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How Proteins are Made
Topic Practice
DNA Mutations
Topic Practice
Punnett Square Practice
Topic Practice
Inheritance of Cystic Fibrosis
Topic Practice
Inheritance of Polydactyly
Topic Practice
How Biological Sex is Determined
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The Causes of Variation
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How Natural Selection Works
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The Risks of Selective Breeding
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The Genetic Engineering Process
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GM Crops: Pro vs Con
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Cuttings vs Tissue Culture
Topic Practice
Fossils: Records of the Past
Topic Practice
Speciation and Isolation
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DNA Replication & Enzymes
Topic Practice
Sexual vs Asexual Reproduction
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Meiosis & Genetic Variation
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The Human Genome Project
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DNA Structure & Nucleotides
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Selective Breeding
Topic Practice
Genetic Engineering
Topic Practice
Plant Cloning: Cuttings & Tissue Culture
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Embryo Transplant Cloning
Topic Practice
Adult Cell Cloning
Topic Practice
Darwin's Theory of Evolution
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Speciation & Alfred Wallace
Topic Practice
Mendel's Genetics Experiments
Topic Practice
The Fossil Record
Topic Practice
Factors Causing Extinction
Topic Practice
Antibiotic Resistant Bacteria
Topic Practice
The Linnaean System
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The Three-Domain System
Topic Practice
Biochemical Evidence for Evolution
Topic Practice
Ecology
Levels of Organisation in Ecosystems
Topic Practice
Biotic vs Abiotic Factors
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Three Types of Adaptations
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Life in the Extremes: Extremophiles
Topic Practice
Random Sampling with Quadrats
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Systematic Sampling with Transects
Topic Practice
The Carbon Cycle Process
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The Water Cycle Process
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The Rate of Decomposition
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Biogas and Anaerobic Decay
Topic Practice
Environmental Change
Topic Practice
The Importance of Biodiversity
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Managing Water Pollution
Topic Practice
Managing Air Pollution
Topic Practice
Global Warming and Biology
Topic Practice
Deforestation and Peat Bogs
Topic Practice
How We Maintain Biodiversity
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Trophic Levels and Consumers
Topic Practice
Pyramids of Biomass
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Transfer of Biomass Efficiency
Topic Practice
The Challenge of Food Security
Topic Practice
Sustainability and Biotechnology
Topic Practice
Sampling Maths: Quadrats & Area
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Food Chains & Trophic Levels
Topic Practice
Rate of Decomposition
Topic Practice
Consequences of Deforestation
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Factors Affecting Food Security
Topic Practice
Farming Techniques & Efficiency
Topic Practice
Sustainable Fisheries
Topic Practice
Biotechnology & Mycoprotein
Topic Practice
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