Biology A2: every topic explained
20 short explanations for Biology A2, one per syllabus topic: the idea, the rules, the common mistake and a worked example. Each one links to our notes and a free test on that topic.
Energy and respiration
Photosynthesis
Homeostasis
Control and coordination
Inheritance
- Passage of information from parents to offspring
- The roles of genes in determining the phenotype
- Gene control
Selection and evolution
Classification, biodiversity and conservation
Genetic technology
- Principles of genetic technology
- Genetic technology applied to medicine
- Genetically modified organisms in agriculture
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