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
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Plant Cell Structure
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Bacterial Cell Structure
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Microscopy Methods
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Magnification Formula
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Cell Differentiation
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Stem Cells & Embryos
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The Cell Cycle & Mitosis
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Binary Fission
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Diffusion
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Osmosis
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Active Transport
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Eukaryotic vs Prokaryotic Cells
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Surface Area to Volume Ratio
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Mitosis vs Meiosis
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Electron Microscopy
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Stem Cell Ethics
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Preparing Microscope Slides
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Factors Affecting Diffusion
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Plant vs Animal Cells
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Active Transport vs Diffusion
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Chromosomes & DNA
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Importance of Mitosis
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Root Hair Cell Specialisation
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Sperm & Nerve Cell Specialisation
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Meristems & Plant Cloning
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Therapeutic Cloning
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Osmosis Required Practical
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Percentage Change in Mass
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Organisation
Hierarchy of Organisation
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The Digestive System
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Enzymes
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Factors Affecting Enzymes
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Food Tests Practical
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The Heart
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Arteries, Veins & Capillaries
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Blood Composition
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Coronary Heart Disease
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Health and Disease
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Lungs & Gas Exchange
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Plant Tissues & Organs
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Transpiration & Xylem
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Hierarchy of the Digestive System
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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
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Benedict's Test for Sugars
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Iodine Test for Starch
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Biuret Test for Proteins
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Ethanol Emulsion Test
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Double Circulatory System
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Natural and Artificial Pacemakers
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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
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Types of Cancer Tumours
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Risk Factors for Cancer
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Lifestyle and Health
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Xylem vs Phloem Transport
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Investigating Transpiration Rate
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Root Hair Cell Structure & Uptake
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Infection
Pathogens
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Viral Diseases
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Bacterial Diseases
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Protists & Fungi
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Human Defence Systems
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The Immune System
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Vaccination
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Antibiotics & Resistance
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Drug Discovery & Development
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Measles Virus and Symptoms
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HIV and AIDS Explained
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Tobacco Mosaic Virus (TMV)
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Salmonella Food Poisoning
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Gonorrhoea Symptoms and Treatment
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Rose Black Spot Disease
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Malaria: Protists and Vectors
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Mosquitoes as Vectors
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The Skin as a Barrier
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Nose, Trachea and Bronchi Defences
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Stomach Acid and Digestion
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Phagocytosis Explained
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Antibodies and Antigens
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How Antitoxins Work
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The Science of Vaccination
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Understanding Herd Immunity
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Antibiotics vs Painkillers
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The Rise of Superbugs
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Plants and Microbes in Medicine
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Preclinical Testing Stages
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The Three Phases of Clinical Trials
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Placebos and Double-Blind Trials
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Production of Monoclonal Antibodies
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Uses of Monoclonal Antibodies
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How to Detect Plant Disease
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Plant Physical Defences
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Plant Chemical Defences
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Plant Mechanical Defences
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Plant Mineral Deficiencies
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Culturing Microorganisms Practical
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Calculating Zones of Inhibition
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Bioenergetics
Photosynthesis
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Limiting Factors
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Uses of Glucose
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Aerobic Respiration
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Anaerobic Respiration
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Response to Exercise
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Metabolism
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The Photosynthesis Equation
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Photosynthesis Rate Practical
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Light Intensity as a Limiting Factor
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Temperature and Photosynthesis
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CO2 Concentration as a Limiting Factor
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Chlorophyll as a Limiting Factor
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The Inverse Square Law
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Storage of Glucose as Starch
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Cellulose and Protein Synthesis
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Aerobic Respiration Equation
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Anaerobic Respiration in Muscles
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Fermentation in Yeast
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Aerobic vs Anaerobic Respiration
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Heart Rate and Exercise
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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
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Calculating Rates of Photosynthesis
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Economic Limiting Factors
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Mitochondria: Powerhouses of the Cell
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Exothermic and Endothermic Reactions
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Proteins and Metabolism
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Homeostasis
Homeostasis Basics
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The Nervous System
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The Human Brain
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Eye Structure & Defects
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The Endocrine System
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Blood Glucose Control
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Adrenaline & Thyroxine
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Thermoregulation
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The Kidneys & ADH
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The Menstrual Cycle
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Contraception Methods
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Reaction Time Required Practical
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Components of a Reflex Arc
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Studying the Brain
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Accommodation: Focusing the Eye
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Correcting Vision Defects
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Mechanisms of Temperature Control
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The Role of Insulin
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The Role of Glucagon
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Type 1 vs Type 2 Diabetes
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Inside the Kidney
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ADH and Water Regulation
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Kidney Dialysis Explained
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Dialysis vs Transplant
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Menstrual Cycle Hormone Feedback
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Comparing Contraceptive Methods
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How IVF Works
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Auxins and Plant Growth
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Investigating Tropisms Practical
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Gibberellins and Ethylene
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Negative Feedback Explained
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Inheritance
DNA & The Genome
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Meiosis & Gametes
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Genetic Inheritance
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Inherited Disorders
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Variation
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Evolution & Selection
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Selective Breeding
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Genetic Engineering
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Cloning Techniques
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Evidence for Evolution
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Fossils & Extinction
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Resistant Bacteria
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DNA Structure and Nucleotides
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How Proteins are Made
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DNA Mutations
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Sexual and Asexual Reproduction
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The Process of Meiosis
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Punnett Square Practice
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Inheritance of Cystic Fibrosis
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Inheritance of Polydactyly
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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
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Animal Cloning: Embryo Transplants
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Adult Cell Cloning
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Fossils: Records of the Past
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Speciation and Isolation
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The Three-Domain System
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Ecology
Communities & Competition
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Biotic & Abiotic Factors
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Adaptations
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Carbon & Water Cycles
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Biodiversity & Waste
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Ecology Sampling
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Levels of Organisation in Ecosystems
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Biotic vs Abiotic Factors
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Three Types of Adaptations
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Life in the Extremes: Extremophiles
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Food Chains and Energy Flow
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Random Sampling with Quadrats
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Systematic Sampling with Transects
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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
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Environmental Change
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The Importance of Biodiversity
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Managing Water Pollution
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Managing Air Pollution
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Global Warming and Biology
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Deforestation and Peat Bogs
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How We Maintain Biodiversity
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Trophic Levels and Consumers
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Pyramids of Biomass
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Transfer of Biomass Efficiency
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The Challenge of Food Security
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Sustainability and Biotechnology
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Need more practice?
The Little & Often Biology app contains hundreds of questions, instant marking, and mini mock exams to help you build confidence for the real thing.