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  1. A Level
  2. Biology Edexcel A

Biology

Spec 9BN0

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Step-by-step Edexcel A A Level Biology lessons by topic, building up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lifestyle, Health and Risk

Circulatory system and mass transport

Heart, blood vessels and cardiac cycle

Atherosclerosis, blood clotting and CVD

Risk factors, data and health studies

Carbohydrates and energy balance

Lipids, cholesterol and CVD treatments

Genes and Health

Gas exchange and diffusion

Cell membranes and transport

DNA, RNA and protein synthesis

Proteins, enzymes and enzyme kinetics

DNA replication, mutation and cystic fibrosis

Monohybrid inheritance and genetic screening

Voice of the Genome

Eukaryotic and prokaryotic cell ultrastructure

Protein transport and microscopy

Gametes, fertilisation and meiosis

Mitosis, cell cycle and stem cells

Differential gene expression and cell specialisation

Epigenetics, phenotype and continuous variation

Biodiversity and Natural Resources

Biodiversity, endemism and diversity indices

Niches, adaptation and natural selection

Hardy-Weinberg, isolation and speciation

Classification and molecular phylogeny

Plant cells, starch and cellulose

Plant transport tissues, sustainability and conservation

On the Wild Side

Ecosystems, niches and ecological sampling

Succession and photosynthesis overview

Light-dependent and light-independent reactions

ATP, productivity and energy transfer

Climate change evidence, modelling and effects

Evolution, carbon cycle and sustainable management

Immunity, Infection and Forensics

Forensics and time of death

DNA profiling, PCR and gel electrophoresis

Bacteria, viruses and pathogen entry

Non-specific and specific immune responses

Immunity, pathogen evolution and antibiotics

Hospital-acquired infections and infection control

Run for your Life

Muscles, skeleton and movement

Sliding filament theory

Aerobic and anaerobic respiration

Cardiac control, ECGs and exercise physiology

Muscle fibres, feedback and homeostasis

Exercise risks, medical technology and performance ethics

Grey Matter

Neurones and action potentials

Synapses and neurotransmitters

Receptors, vision and plant responses

Brain structure and imaging

Visual development, animal studies and habituation

Brain chemicals, personalised medicine and GM organisms