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A-Level OCR A Biology

Complete revision notes and practice questions for OCR A A-Level Biology (H420). Covering all 6 modules from Foundations in Biology to Genetics and Ecosystems.

H420Spec Code
3Papers
6Modules
Also available for: Edexcel AQA OCR A
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Modules 1 & 2: Foundations in Biology
6 sub-topics • Papers 1, 2 & 3
All Papers
2.1
Cell Structure & Microscopy
NotesPractice
2.2
Biological Molecules
NotesPractice
2.3
Nucleotides and Nucleic Acids
NotesPractice
2.4
Enzymes
NotesPractice
2.5
Biological Membranes
NotesPractice
2.6
Cell Division, Diversity & Organisation
NotesPractice
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Module 3: Exchange & Transport
3 sub-topics • Papers 1 & 3
Paper 1 & 3
3.1
Exchange Surfaces
NotesPractice
3.2
Transport in Animals
NotesPractice
3.3
Transport in Plants
NotesPractice
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Module 4: Biodiversity, Evolution & Disease
3 sub-topics • Papers 2 & 3
Paper 2 & 3
4.1
Communicable Diseases & Immune System
NotesPractice
4.2
Biodiversity
NotesPractice
4.3
Classification and Evolution
NotesPractice
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Module 5: Homeostasis & Energy
6 sub-topics • Papers 1 & 3
Paper 1 & 3
5.1.1
Communication & Homeostasis
NotesPractice
5.1.2
Excretion
NotesPractice
5.1.3
Neuronal & Hormonal Communication
NotesPractice
5.1.5
Plant and Animal Responses
NotesPractice
5.2.1
Photosynthesis
NotesPractice
5.2.2
Respiration
NotesPractice
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Module 6: Genetics, Evolution & Ecosystems
6 sub-topics • Papers 2 & 3
Paper 2 & 3
6.1.1
Cellular Control
NotesPractice
6.1.2
Patterns of Inheritance
NotesPractice
6.1.3
Manipulating Genomes
NotesPractice
6.2.1
Cloning and Biotechnology
NotesPractice
6.3.1
Ecosystems
NotesPractice
6.3.2
Populations and Sustainability
NotesPractice

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