OCR GCSE Biology Revision Notes
OCR B1.1 Cell structures
Cell Division – Nucleus and Chromosomes (GCSE Biology)
Microscopes & Cultures – Magnification and Unit Conversions (GCSE Biology)
Microscopes & Cultures – Microscopes (GCSE Biology)
Introduction to Cells – Animal and Plant Cells (GCSE Biology)
Introduction to Cells – Eukaryotes and Prokaryotes (GCSE Biology)
OCR B1.2 What happens in cells (and what do cells need)?
DNA – Protein Synthesis: Translation (GCSE Biology)
DNA – Its Structure (GCSE Biology)
DNA – An Introduction (GCSE Biology)
Exercise & Metabolism – Metabolism (GCSE Biology)
Enzymes & Digestion – Enzyme Action: Reaction Rates (GCSE Biology)
Enzymes & Digestion – Enzyme Action: Factors that Affect it (GCSE Biology)
Enzymes & Digestion – Enzymes: An Introduction (GCSE Biology)
OCR B1.3 Respiration
OCR B1.4 Photosynthesis
OCR B2.1 Supplying the cell
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)
Cell Division – Stem Cell Types (GCSE Biology)
Cell Division – Mitosis: its Stages (GCSE Biology)
Cell Division – The Cell Cycle and Mitosis (GCSE Biology)
Introduction to Cells – Cell Differentiation (GCSE Biology)
Introduction to Cells – Specialised Cells: More Cells (GCSE Biology)
Introduction to Cells – Specialised Cells: Sperm Cells (GCSE Biology)
OCR B2.2 The challenges of size
Transpiration – Plant Water Loss (GCSE Biology)
Transpiration – Transpiration Rates (GCSE Biology)
Transpiration – Transpiration in Plants (GCSE Biology)
Transport in Plants – Structure of a Plant (GCSE Biology)
Transport in Plants – Transport Systems in Plants (GCSE Biology)
Blood and Blood Vessels: Veins and Capillaries (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)
OCR B3.1 Coordination and control – the nervous system
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)
Structure & Function of Nervous System – Structures of the Nervous System (GCSE Biology)
Structure & Function of Nervous System – Functions of the Nervous System (GCSE Biology)
OCR B3.2 Coordination and control – the endocrine system
Plant Hormones – Commercial Use of Plant Hormones (GCSE Biology)
Plant Hormones – Experiments on Plant Responses (GCSE Biology)
Plant Hormones – Tropisms: Phototropism & Geotropism (GCSE Biology)
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: Graphs (GCSE Biology)
Hormones in Human Reproduction – The Menstrual Cycle: Hormonal Interactions (GCSE Biology)
Hormones in Human Reproduction – The Menstrual Cycle: Hormones (GCSE Biology)
OCR B3.3 Maintaining internal environments Topic
Osmoregulation & The Kidney – Anti-Diuretic Hormone (GCSE Biology)
Osmoregulation & The Kidney – The Kidneys and Excretion (GCSE Biology)
Osmoregulation & The Kidney – Osmoregulation (GCSE Biology)
Control of Blood Glucose Concentration – Diabetes Mellitus: Type I & II (GCSE Biology)
Control of Blood Glucose Concentration – Increasing and Decreasing Blood Glucose Levels (GCSE Biology)
Control of Blood Glucose Concentration – Blood Glucose Homeostasis (GCSE Biology)
Homeostasis – Increasing and Decreasing Body Temperature (GCSE Biology)
Homeostasis – An Introduction (GCSE Biology)
Homeostasis – Thermoregulation (GCSE Biology)
OCR B4.1 Ecosystems
Cycles – Decomposition & The Nitrogen Cycle (GCSE Biology)
Cycles – The Water Cycle (GCSE Biology)
Cycles – Cycles & The Carbon Cycle (GCSE Biology)
Organisation & Trophic Levels – Transfer of Biomass (GCSE Biology)
Organisation & Trophic Levels – Pyramids of Biomass (GCSE Biology)
Organisation & Trophic Levels – Quadrat and Transect Sampling (GCSE Biology)
Organisation & Trophic Levels – Trophic Levels & Food Chains (GCSE Biology)
Ecosystems – Biotic Factors (GCSE Biology)
Ecosystems – Abiotic Factors (GCSE Biology)
Ecosystems – Ecosystems and Communities (GCSE Biology)
OCR B5.1 Inheritance
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)
DNA – An Introduction (GCSE Biology)
OCR B5.2 Natural selection and evolution
REARRANGED ORDER – Mainatining Bioversity (GCSE Biology)
Classification – (GCSE Biology)
Fossils & Extinction – Extinctinction (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 – Evolution and Natural Selection (GCSE Biology)
Variation – Variation and Its Causes (GCSE Biology)
OCR B6.1 Monitoring and maintaining the environment
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)
Organisation & Trophic Levels – Quadrat and Transect Sampling (GCSE Biology)
OCR B6.2 Feeding the human race
OCR B6.3 Monitoring and maintaining health
Variation – Genetic Engineering (GCSE Biology)
Variation – The Human Genome Project (GCSE Biology)
Plant Disease & Defence – Plant Diseases and Deficiencies (GCSE Biology)
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)
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