Below you will find our collection of revision notes and video tutorials. For the best revision experience, use both the notes and the videos at the same time to help you follow along. All resources are updated for the latest AQA Biology specification.
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Video Tutorials
1. Biological molecules
2. Cells
- Methods of studying cells: magnification & resolution
- Transport across membranes: active transport & co-transport
- Cell division: mitosis
- The immune system: phagocytosis
- The immune system: T cells and B cells
3. Exchanging substances
- Gas exchange in insects & fish
- Structure of the human heart
- Haemoglobin & bohr effect
- Mass transport in plants: xylem
4. Genetics, classification & biodiversity
5. Energy transfers in & between organisms
- An introduction to photosynthesis
- Photosynthesis: the light dependent reaction
- Respiration: glycolysis
- Respiration: krebs cycle
- Productivity
- The nitrogen cycle
6. Responding to changes in environments
- Plant responses: growth factors
- The pacinian corpuscle
- Control of heart rate
- The nervous system: action potentials
- Muscles: sliding filament theory
- Homeostasis: the kidneys
7. Genetics, populations, evolution & ecosystems
- Monohybrid inheritance
- Inheritance: autosomal linkage
- Allopatric & sympatric speciation
- Abundance & distribution of organisms