Study guides

    Find a topic, check your course details and build your understanding.

    Showing 1–30 of 81 guides

    Biology

    All Cells Arise from Other Cells

    AQAA-Level

    Master the foundation of all biology: Cells. This comprehensive guide covers cell structure, specialisation, microscopy, and cell division, providing the essential knowledge needed to secure top marks in your GCSE exams.

    Read study guide

    Biology

    Alteration of the Sequence of Bases

    AQAA-Level

    Unlock top marks by mastering how a single change in a DNA base can have catastrophic effects on a protein's structure and function. This guide breaks down the complete causal chain, from mutation to non-functional enzyme, giving you the precise language and exam technique AQA rewards.

    Read study guide

    Biology

    ATP

    Pearson EdexcelA-Level

    Master the molecular basis of life and disease. This topic bridges the gap between DNA structure and real-world health conditions like Cystic Fibrosis, testing your ability to link microscopic mutations to macroscopic symptoms.

    Read study guide

    Biology

    Biodiversity

    EduqasGCSE

    WJEC-GCSE-Biology

    Biodiversity is the variety of all living things, and it's essential for stable ecosystems. This topic covers how we measure it, the human activities that threaten it, and how we can protect it for the future.

    Read study guide

    Biology

    Biodiversity

    OCRGCSE

    Master the intricate web of life with this comprehensive guide to Community Level Systems. From the delicate balance of ecosystems to the complex cycling of vital nutrients, you'll discover how every organism plays a crucial role in nature's grand design, preparing you to tackle high-mark exam questions with confidence.

    Read study guide

    Biology

    Bioenergetics

    AQAGCSE

    8461

    Master the engine room of life! This guide covers photosynthesis and respiration, essential processes that transfer energy in all living things, and is packed with the exact terminology examiners look for to award top marks.

    Read study guide

    Biology

    Cell biology

    AQAGCSE

    8461

    Master the building blocks of life! This topic covers everything from the intricate structures inside cells to how they divide and transport substances—essential knowledge that forms the foundation of your entire Biology GCSE.

    Read study guide

    Biology

    Cell biology

    EduqasGCSE

    WJEC-GCSE-Biology

    Cell Biology is the foundational topic for all of GCSE Biology, covering everything from basic cell structure to cell division and respiration. Mastering these concepts is essential, as examiners consistently use them as a basis for more complex questions across the entire specification.

    Read study guide

    Biology

    Cell metabolism

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the fundamental processes that keep cells alive: how enzymes control reactions, how respiration releases energy, and how digestion breaks down food. This topic is heavily tested in exams, particularly linking enzyme activity to temperature and pH graphs.

    Read study guide

    Biology

    Cell Specialisation

    OCRGCSE

    Unlock top marks in OCR GCSE Biology by mastering Cell Specialisation (1.2). This guide breaks down how cells adapt for specific jobs, from sperm to xylem, giving you the examiner's perspective on how to link structure to function and avoid common pitfalls.

    Read study guide

    Biology

    Cell Structure

    AQAA-Level

    This topic covers the fundamental building blocks of all living organisms: cells. You'll learn the differences between plant, animal, and bacterial cells, how they specialise to perform specific functions, and why stem cells hold such incredible medical potential.

    Read study guide

    Biology

    Communicable disease

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the microscopic world of pathogens and the body's incredible defence systems. This topic is heavily tested in exams, especially the differences between antibiotics and vaccines, and the distinction between phagocytes and lymphocytes.

    Read study guide

    Biology

    Control of Body Temperature

    OCRGCSE

    Master thermoregulation for your OCR GCSE Biology exam. This guide breaks down how your body maintains its core temperature, focusing on the crucial role of the hypothalamus and the mechanisms of negative feedback. Nail the 6-mark questions by understanding vasodilation, vasoconstriction, and the science of sweating.

    Read study guide

    Biology

    Coordination and control

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the fascinating ways your body and plants respond to their environment. This crucial GCSE Biology topic covers everything from the lightning-fast reflex arcs to the slower, long-lasting effects of hormones like insulin and adrenaline.

    Read study guide

    Biology

    Data Collection

    OCRGCSE

    Master the core of scientific practice by learning how to collect, record, and interpret biological data like a professional. This guide focuses on the essential 'Working Scientifically' skills that OCR examiners love to test, turning tricky data questions into guaranteed marks."

    Read study guide

    Biology

    DNA and Protein Synthesis

    AQAA-Level

    Master the flow of energy through ecosystems, from photosynthesis to apex predators. This guide covers essential calculations for productivity (GPP, NPP) and farming practices that maximize yield, ensuring you can tackle both data analysis and long-answer questions with confidence.

    Read study guide

    Biology

    DNA and Protein Synthesis

    Pearson EdexcelA-Level

    Master the intricate relationship between DNA, proteins, and disease in Topic 2: Genes and Health. This core unit explores how microscopic genetic changes lead to macroscopic health impacts, using cystic fibrosis as a vital case study.

    Read study guide

    Biology

    Ecology

    AQAGCSE

    8461

    Master the complex interactions of the natural world with this comprehensive guide to Ecology. From food webs and the 10% biomass rule to the carbon cycle and human impacts, this resource provides the precise terminology and examiner insights you need to secure top marks.

    Read study guide

    Biology

    Ecosystems

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the intricate web of life! This topic covers how energy flows, materials cycle, and organisms interact within ecosystems. It's heavily tested in exams, especially through calculations of biomass efficiency and the impacts of human activity on biodiversity.

    Read study guide

    Biology

    Gene Technologies

    OCRA-Level

    Master the complex interactions of life from DNA to entire ecosystems in Module 6. This crucial topic connects inheritance patterns with evolutionary pressures and energy flow, testing your ability to apply mathematical models to biological systems.

    Read study guide

    Biology

    Global Warming

    OCRGCSE

    This guide provides a comprehensive, exam-focused breakdown of Global Warming (OCR GCSE Biology 7.8). It covers the core science, from the natural greenhouse effect to the human activities driving climate change, and equips you with the specific knowledge and exam technique needed to secure top marks.

    Read study guide

    Biology

    Growth and development of cells

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the fundamentals of cell growth and development, from the precision of mitosis for growth and repair to the genetic variation introduced by meiosis. This essential GCSE Biology topic also covers the incredible potential of stem cells and the dangerous consequences of uncontrolled cell division in cancer.

    Read study guide

    Biology

    Health and disease

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the battle between your body and microscopic invaders. This topic covers how pathogens cause disease, how your immune system fights back, and the rigorous process of developing life-saving drugs.

    Read study guide

    Biology

    Health, disease and the development of medicine

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the microscopic battlefield of your body and the journey of life-saving drugs from lab to patient. This crucial GCSE Biology topic connects classroom science to real-world medicine, testing your understanding of immunity, disease transmission, and scientific trials.

    Read study guide

    Biology

    Homeostasis and response

    AQAGCSE

    8461

    Master the intricate control systems that keep your body in perfect balance. From lightning-fast nerve impulses to the slow, steady control of hormones, this topic is crucial for understanding how organisms survive and respond to their environment.

    Read study guide

    Biology

    Homeostasis in humans

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the essential mechanisms that keep your body alive and functioning. This topic covers how your body maintains a constant internal environment through negative feedback, regulating blood glucose, body temperature, and water balance—key concepts that are heavily tested in every exam series.

    Read study guide

    Biology

    Hormonal coordination and control in humans

    EduqasGCSE

    WJEC-GCSE-Biology

    Master the body's chemical communication system. Learn how hormones control everything from your metabolism to the fight-or-flight response, and how they interact in complex cycles like the menstrual cycle.

    Read study guide

    Biology

    Infection and response

    AQAGCSE

    8461

    Master the fascinating microscopic battles happening inside you right now! This topic covers the pathogens that cause disease, how your brilliant immune system fights back, and the science behind life-saving vaccines and drugs.

    Read study guide

    Biology

    Inheritance

    WJECA-Level

    Master WJEC A-Level Inheritance (7.1) by decoding genetic diagrams, conquering the Chi-squared test, and tackling complex linkage and epistasis questions. This guide provides examiner insights and multi-modal resources to help you secure top marks."

    Read study guide

    Biology

    Inheritance

    Pearson EdexcelA-Level

    Master Edexcel A-Level Inheritance (7.1) with this guide, covering everything from complex genetic crosses to the Chi-squared test. Secure top marks by understanding how examiners award credit for precise terminology and structured answers.

    Read study guide
    Start free

    7 days Premium · Then free forever · No card, no charge