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Biology A (Salters-Nuffield) (9BN0)
12 sections available · 51 chapters available
Free Biology A (Salters-Nuffield) (9BN0) study notes for Pearson Edexcel A Level students. Each chapter covers a key topic with examples and practice prompts you can continue inside the thinka app.
Paper 1: The Natural Environment and Species Survival
Paper 2: Energy, Exercise and Co-ordination
Topic 1: Lifestyle, Health and Risk
Heart, circulation and blood vessels
Cardiac cycle, atherosclerosis and blood clotting
Risk, correlation and study design
Carbohydrates and lipids
Diet, energy balance and CVD treatments
Topic 2: Genes and Health
Gas exchange surfaces and Fick's law
Membrane structure and transport
DNA, RNA and protein synthesis
Proteins and enzymes
DNA replication, mutation and cystic fibrosis
Monohybrid inheritance and genetic screening
Practical skills
Topic 3: Voice of the Genome
Eukaryotic and prokaryotic cell ultrastructure
Gametes and fertilisation
Mitosis, meiosis and the cell cycle
Stem cells and differential gene expression
Epigenetics, phenotype and continuous variation
Topic 4: Biodiversity and Natural Resources
Biodiversity, endemism and diversity indices
Niche, adaptation and natural selection
Hardy-Weinberg, speciation and classification
Plant cells, cellulose and plant fibres
Plant minerals, drug testing and sustainability
Conservation: zoos and seed banks
Topic 5: On the Wild Side
Ecosystems, niches and succession
Light-dependent reactions of photosynthesis
Calvin cycle and chloroplast structure
Productivity and energy transfer
Evidence and causes of climate change
Climate change, evolution and speciation
Topic 6: Immunity, Infection and Forensics
Forensics: time of death and decomposition
DNA profiling, PCR and electrophoresis
Bacteria, viruses, tuberculosis and HIV
Barriers and non-specific responses
Immune response, B and T cells, immunity
Antibiotics and hospital acquired infections
Topic 7: Run for your Life
Muscles and the sliding filament theory
Aerobic respiration and oxidative phosphorylation
Anaerobic respiration and lactate
Heart activity, ECGs and cardiac output
Homeostasis, feedback and thermoregulation
Exercise, health and medical technology
Topic 8: Grey Matter
Neurones and the action potential
Synapses and neurotransmitters
Vision and the retina
Plant responses: phytochrome and IAA
Brain structure, imaging and development
Brain chemicals, drugs and learning
Genome sequencing and genetically modified organisms
Practical and mathematical skills
Core practicals and experimental design
Data handling and statistical tests
Calculations, graphs and units
Synoptic questions and the pre-released article
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