OCR•J257•Twenty First Century Science
OCR GCSE Biology B
8 sections · 198 revision notes, with key terms, exam tips and past papers
Starts with Cells and Microscopy.
Specification
Read OCR’s specification (PDF) (opens in a new tab)
What’s on each paper: Breadth in biology (Foundation) · Depth in biology (Foundation) · Breadth in biology (Higher) · Depth in biology (Higher)
Chapter B1 Genetics and the Genome
Genome Structure and Function · Inheritance Mechanisms · Gene Technology Applications24 notes
B1.1 Genome Structure and Function
B1.2 Inheritance Mechanisms
B1.3 Gene Technology Applications
Chapter B2 Health and Disease
Causes of Disease · Pathogen Defences · Preventing Infection Spread · Identifying Infections · Factors Affecting Health · Disease Treatment27 notes
B2.1 Causes of Disease
B2.2 Pathogen Defences
B2.3 Preventing Infection Spread
B2.4 Identifying Infections
B2.5 Factors Affecting Health
Chapter B3 Ecosystems and Photosynthesis
Photosynthesis · Plant Transport · Interdependence in Ecosystems · Population Ecology34 notes
B3.1 Photosynthesis
B3.2 Plant Transport
- Transport of Substances
- Diffusion, Osmosis and Active Transport
- Cell Membranes
- Root Hair Cells
- Xylem and Phloem
- Transpiration and Translocation 3 notes
- Environmental Factors
- Calculations and Graphs (Water Uptake)
B3.3 Interdependence in Ecosystems
- Biological Molecules
- Producers
- Transport in Organisms
- Ecosystem Organisation
- Interdependence and Competition
- Trophic Levels
- Pyramids of Biomass
- Efficiency of Transfers
- Cycling of Substances
- Carbon and Water Cycles
- Role of Microorganisms
- Percentage Mass Calculations
- Decomposition Factors
- Rate of Decay
B3.4 Population Ecology
Chapter B4 Respiration and Growth
Cellular Respiration · Cell Structure Analysis · Growth and Development · Plant Control Systems · Stem Cell Ethics16 notes
B4.1 Cellular Respiration
B4.2 Cell Structure Analysis
B4.3 Growth and Development
B4.4 Plant Control Systems
B4.5 Stem Cell Ethics
Chapter B5 Human Physiology
Human Transport Systems · The Nervous System · Hormonal Control · Homeostasis · Reproductive Hormones · Disorders of Control Systems33 notes
B5.1 Human Transport Systems
B5.2 The Nervous System
B5.3 Hormonal Control
B5.4 Homeostasis
B5.5 Reproductive Hormones
B5.6 Disorders of Control Systems
Chapter B6 Evolution and Biodiversity
Theory of Evolution · Reproduction and Evolution · Classification of Organisms · Biodiversity Conservation18 notes
B6.1 Theory of Evolution
B6.2 Reproduction and Evolution
B6.3 Classification of Organisms
B6.4 Biodiversity Conservation
Chapter B7 Scientific Methodology
Experimental Design · Data Analysis and Evaluation · Scientific Models and Theories · Science in Society30 notes
IaS1 Experimental Design
IaS2 Data Analysis and Evaluation
IaS3 Scientific Models and Theories
Chapter B8 Practical Skills
Microscopy Techniques · Biological Molecule Tests · Sampling Techniques · Enzyme Reaction Rates · Photosynthesis Investigations · Physiology and Responses · Microbiological Techniques · Cell Transport Investigations16 notes
Microscopy Techniques
Biological Molecule Tests
Sampling Techniques
Enzyme Reaction Rates
Photosynthesis Investigations
Physiology and Responses
Microbiological Techniques
Cell Transport Investigations
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