OCR GCSE Combined Science B · J260

OCR GCSE Combined Science B Biology

Length: 1 hour 45 minutes
Marks: 95
Weighting: 26.4% of the GCSE

From the OCR specification (opens in a new tab), Version 5.0 (June 2026), PDF page 11.

9 sections · 76 revision notes · 18 past papers

What’s on Biology

Chapter B1 Genetics and Inheritance

The Genome and Its Functions · Inheritance of Genetic Information · Applications and Ethics of Gene TechnologyAlso on Combined Science4 notes

B1.1 The Genome and Its Functions

Cell Structures, DNA, and Protein Synthesis 2 notes
- Genetic Material in Cells and Light Microscopy

Biology past papers

The Genome, Proteins and Phenotype

B1.2 Inheritance of Genetic Information

Genetic Crosses and Sex Determination

B1.3 Applications and Ethics of Gene Technology

Genetic Engineering and Medicine

Genetics and Inheritance overview

Chapter B2 Health and Disease

Causes of Disease · Organism Defences Against Pathogens · Prevention of Infection Spread · Lifestyle, Genes, and Health · Disease Treatment and MedicineAlso on Combined Science8 notes

Chapter B3 Food and Ecosystems

Photosynthesis · Plant Transport and Absorption · Ecosystem Interdependence · Population Dynamics and Ecosystem ConditionsAlso on Combined Science10 notes

B3.1 Photosynthesis

Photosynthetic Processes and Rates 3 notes

B3.2 Plant Transport and Absorption

Cellular Transport and Plant Vessels 3 notes

B3.3 Ecosystem Interdependence

Biomass Transfer and Nutrient Cycling 3 notes

B3.4 Population Dynamics and Ecosystem Conditions

Investigating Ecosystems

Food and Ecosystems overview

Chapter B4 Food and Growth Control

Cellular Respiration Process · Microscopy and Cell Structures · Organism Growth and Development · Stem Cells in MedicineAlso on Combined Science6 notes

B4.1 Cellular Respiration Process

Cellular Respiration Fundamentals

B4.2 Microscopy and Cell Structures

Electron Microscopy Applications

B4.3 Organism Growth and Development

Cell Division and Differentiation 3 notes

B4.4 Stem Cells in Medicine

Ethics of Stem Cell Use

Food and Growth Control overview

Chapter B5 Human Body Systems and Survival

Substance Transport in the Body · Nervous System and Responses · Hormonal Coordination and Control · Homeostasis and Internal Environments · Hormones in Human Reproduction · Blood Sugar Regulation and DiabetesAlso on Combined Science9 notes

B5.1 Substance Transport in the Body

Transport Systems and Exchange Surfaces 2 notes
- Cellular Exchange and the Need for Transport Systems
- The Human Circulatory System: Heart, Vessels and Blood

B5.2 Nervous System and Responses

Nervous System Components and Reflexes

B5.3 Hormonal Coordination and Control

Endocrine System Principles

B5.4 Homeostasis and Internal Environments

Importance of Homeostasis

B5.5 Hormones in Human Reproduction

Reproductive Hormones and Technologies 3 notes

B5.6 Blood Sugar Regulation and Diabetes

Insulin, Glucagon, and Diabetes

Human Body Systems and Survival overview

Chapter B6 Evolution and Biodiversity

Development of Evolutionary Theory · Classification of Organisms · Biodiversity and ConservationAlso on Combined Science4 notes

B6.1 Development of Evolutionary Theory

Natural Selection and Evolution Evidence 2 notes
- Genetic Variation, Natural Selection and Selective Breeding
- Evidence for Evolution

B6.2 Classification of Organisms

DNA and Classification Systems

B6.3 Biodiversity and Conservation

Human Impacts on Biodiversity

Evolution and Biodiversity overview

Chapter BCP7 Ideas about Science

Scientific Investigation Considerations · Drawing Conclusions from Data · Development of Scientific Explanations · Societal Impact of Science and TechnologyOn every paper8 notes

IaS1 Scientific Investigation Considerations

Investigation Planning and Execution

IaS2 Drawing Conclusions from Data

Data Presentation and Evaluation 3 notes

IaS3 Development of Scientific Explanations

Scientific Models and Theories 3 notes

IaS4 Societal Impact of Science and Technology

Assessing Scientific Impact and Risk

Ideas about Science overview

Chapter BCP8 Practical Skills

Biology Practical Activities · Chemistry Practical Activities · Physics Practical ActivitiesOn every paper18 notes

Biology Practical Activities

B1 Microscopy Techniques 2 notes
- Microscopy and Scientific Drawings
- Accurate Biological Measurements
B2 Sampling Strategies
B3 Enzyme-Controlled Reactions
B4 Investigating Photosynthesis
B5 Microbiological Methods

Chemistry Practical Activities

Physics Practical Activities

Practical Skills overview

Chapter 5 Mathematical Skills and Equations

Mathematical Skills · Equations in PhysicsOn every paper9 notes

5e Mathematical Skills

5h Equations in Physics

Mathematical Skills and Equations overview

All OCR GCSE Combined Science B past papers

C4

Salt Production

C5 Measuring Reaction Rates

2 notes

P5 Energy Transfers

P6 Electrical Circuits