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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

Anaerobic Respiration – Plants and Fungi (GCSE Biology)

Anaerobic Respiration – Animals (GCSE Biology)

Aerobic Respiration – (GCSE Biology)

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

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

OCR B1.4 Photosynthesis

Photosynthesis: The Inverse Square Law – (GCSE Biology)

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

Photosynthesis: An Introduction – (GCSE Biology)

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

Biotechnology – Biotechnology & GM Foods (GCSE Biology)

Food Security – Farming Techniques (GCSE Biology)

Food Security – Food Production & Security (GCSE Biology)

Variation – Genetic Engineering (GCSE Biology)

Variation – Selective Breeding (GCSE Biology)

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)