AQA • Biology

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Complete AQA A Level Biology notes on gene expression with diagrams, definitions to support your understanding. Details include: Gene mutations Causes of mutations Stem cells and totipotency Induced pluripotent stem cells Regulation of transcription and translation Effect of oestrogen on gene transcription Epigenetic control of gene expression RNA interference on gene expression Gene expression and cancer Oncogenes and tumour suppressor genes Genome projects

Complete AQA A Level Biology notes on energy and ecosystem with diagrams, definitions to support your understanding. Details include: Definition of keywords Energy transfer and productivity Nitrogen cycle Phosphate cycle Fertilisers Environmental effects (eutrophication)

Complete AQA A Level Biology notes on populations and ecosystems with diagrams, definitions to support your understanding. Details include: Definition of keywords Predator prey relationships Investigating populations Succession Conservation of habitats

Complete AQA A Level Biology notes on recombinant DNA technology with diagrams, definitions to support your understanding. Details include: Producing DNA fragments In vivo gene cloning Marker genes In vitro gene cloning (PCR) Locating genes Genetic fingerprinting Gel electrophoresis

Complete AQA A Level Biology notes on nervous coordination and muscles with diagrams, definitions to support your understanding. Details include: Myelinated motor neuron Resting and action potential Speed of nerve impulses Synapse Inhibition Muscle structure Sliding filament theory Types of muscle fibre

Complete AQA A Level Biology notes on response to stimuli with diagrams, definitions to support your understanding. Details include: Mechanisms to induce response Control of plant tropism (experimental) Acid growth hypothesis Reflex arc Control of heart rate Pacinian corpuscle Receptors in the eye

Complete AQA A Level Biology notes on inheritance with diagrams, definitions to support your understanding. Details include: Monohybrid and dihybrid inheritance Punnet square Codominance Multiple alleles Autosomal linkage Epistasis Chi Squared Test

Complete AQA A Level Biology notes on respiration with diagrams, definitions to support your understanding. Details include: Glycolysis Link reaction Krebs cycle Oxidative phosphorylation Alternative respiratory substrates Anaerobic respiration

Complete AQA A Level Biology notes on populations and evolution with diagrams, definitions to support your understanding. Details include: Hardy-Weinberg Variation in phenotype Natural selection Isolation and speciation

Complete AQA A Level Biology notes on genetics with diagrams, definitions to support your understanding. Details include: Gene and genetic code DNA and chromosomes RNA Transcription and translation Gene mutation Genetic variation Genetic diversity Natural selection Statistical tests

Complete AQA A Level Biology notes on biological molecules with diagrams, definitions to support your understanding. Details include: Carbohydrates Lipids Proteins Chemical Tests

Complete AQA A Level Biology notes on cell organelles with diagrams, definitions to support your understanding. Details include: Eukaryotic Cells Prokaryotic Cells Microscopy Cell Fractionation and Ultracentrifugation

Complete AQA A Level Biology notes on immunity with diagrams, definitions to support your understanding. Details include: Defense mechanisms Phagocytosis T-Lymphocytes B-Lymphocytes Antibody structure Vaccination Antibody production HIV Monoclonal antibodies

Complete AQA A Level Biology notes on mass transport with diagrams, definitions to support your understanding. Details include: Cardiac cycle Blood vessels Tissue fluid Haemoglobin Bohr effect Oxygen dissociation curve

Complete AQA A Level Biology notes on nucleic acids and nucleotides with diagrams, definitions to support your understanding. Details include: DNA and DNA replication RNA ATP Water

Complete AQA A Level Biology notes on cell membrane and cell division with diagrams, definitions to support your understanding. Details include: Phospholipids Fluid Mosaic Model Diffusion Osmosis Co- transport Active transport Cell cycle Mitosis

Complete AQA A Level Biology notes on enzyme and digestion with diagrams, definitions to support your understanding. Details include: Induced fit model Factors affecting enzyme Enzyme Inhibition Digestion Absorption

Complete AQA A Level Biology notes on photosynthesis with diagrams, definitions to support your understanding. Details include: Light dependent reaction Light independent reaction Effect of temperature on LID and LDR Limiting factors

Extended and high scoring essay example for AQA A Level Biology on the question 'The Importance of Receptors in Biology'.