OCR•J247•Gateway Science
OCR GCSE Biology A
7 sections · 139 revision notes, with key terms, exam tips and past papers
Starts with B1.1a Light microscopy.
Specification
Read OCR’s specification (PDF) (opens in a new tab)
What’s on each paper: Paper 1 (Foundation) · Paper 2 (Foundation) · Paper 3 (Higher) · Paper 4 (Higher)
Paper 1 (Foundation) or Paper 3 (Higher)
Topic B1 Cell level systems
Cell structures · Cellular processes · Respiration · Photosynthesis23 notes
B1.1 Cell structures
B1.2 Cellular processes
B1.3 Respiration
Topic B2 Scaling up
Supplying the cell · The challenges of size16 notes
B2.1 Supplying the cell
B2.2 The challenges of size
Topic B3 Organism level systems
The nervous system · The endocrine system · Homeostasis27 notes
B3.1 The nervous system
B3.2 The endocrine system
Paper 2 (Foundation) or Paper 4 (Higher)
Topic B4 Community level systems
Ecosystems10 notes
B4.1 Ecosystems
- B4.1a Material cycling
- B4.1b Role of microorganisms
- B4.1c Carbon and water cycles
- B4.1d Factors affecting decomposition
- B4.1e Levels of organisation
- B4.1f Abiotic and biotic factors
- B4.1g Interdependence and competition
- B4.1h Trophic levels
- B4.1i Pyramids of biomass
- B4.1j Efficiency of biomass transfer
Topic B5 Genes, inheritance and selection
Inheritance · Natural selection and evolution19 notes
B5.1 Inheritance
- B5.1a Genetic terms
- B5.1b Genome
- B5.1c Interaction with environment
- B5.1d Mutations and variants
- B5.1e Genetic variants influence
- B5.1f Asexual and sexual reproduction
- B5.1g Haploid and diploid
- B5.1h Meiosis
- B5.1i Single gene inheritance
- B5.1j Predicting results
- B5.1k Sex determination
- B5.1l Polygenic inheritance
- B5.1m Development of genetics
B5.2 Natural selection and evolution
Topic B6 Global challenges
Environmental monitoring · Food production · Health and disease35 notes
B6.1 Environmental monitoring
B6.2 Food production
B6.3 Health and disease
- B6.3a Health and disease
- B6.3b Types of diseases
- B6.3c Interactions between diseases
- B6.3d Spread of communicable diseases
- B6.3e Reducing spread
- B6.3f Common infections
- B6.3g Physical plant defences
- B6.3h Chemical plant defences
- B6.3i Detection of plant diseases
- B6.3j White blood cells and platelets
- B6.3k Non-specific defence systems
- B6.3l Immune system role
- B6.3m Monoclonal antibodies production
- B6.3n Monoclonal antibodies uses
- B6.3o Vaccines and medicines
- B6.3p Aseptic techniques
- B6.3q New medicines
- B6.3r Non-communicable diseases
- B6.3s Treatments for cardiovascular disease
- B6.3t Lifestyle factors
- B6.3u Cancer
- B6.3v Stem cells in medicine
- B6.3w Gene technology in medicine
- B6.3x Human genome
All papers
Topic B7 Practical skills
Practical activities9 notes
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