Biology_A-level_Aqa
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1-biological-molecules
1-1-biological-molecules-carbohydrates11 主题-
1-1-1-biological-molecules-key-terms
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1-1-2-biological-molecules-reactions
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1-1-3-monosaccharides
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1-1-4-glucose
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1-1-5-the-glycosidic-bond
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1-1-6-chromatography-monosaccharides
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1-1-7-disaccharides
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1-1-8-starch-and-glycogen
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1-1-9-cellulose
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1-1-10-biochemical-tests-sugars-and-starch
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1-1-11-finding-the-concentration-of-glucose
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1-1-1-biological-molecules-key-terms
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1-2-biological-molecules-lipids3 主题
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1-3-biological-molecules-proteins5 主题
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1-4-proteins-enzymes12 主题
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1-4-1-many-proteins-are-enzymes
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1-4-2-enzyme-specificity
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1-4-3-how-enzymes-work
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1-4-4-required-practical-measuring-enzyme-activity
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1-4-5-drawing-a-graph-for-enzyme-rate-experiments
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1-4-6-using-a-tangent-to-find-initial-rate-of-reaction
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1-4-7-limiting-factors-affecting-enzymes-temperature
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1-4-8-limiting-factors-affecting-enzymes-ph
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1-4-10-limiting-factors-affecting-enzymes-enzyme-concentration
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1-4-11-limiting-factors-affecting-enzymes-substrate-concentration
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1-4-12-limiting-factors-affecting-enzymes-inhibitors
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1-4-14-control-of-variables-and-uncertainty
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1-4-1-many-proteins-are-enzymes
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1-5-nucleic-acids-structure-and-dna-replication8 主题
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1-5-2-nucleotide-structure-and-the-phosphodiester-bond
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1-5-3-dna-structure-and-function
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1-5-4-rna-structure-and-function
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1-5-5-ribosomes
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1-5-6-the-origins-of-research-on-the-genetic-code
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1-5-8-the-process-of-semi-conservative-replication
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1-5-9-calculating-the-frequency-of-nucleotide-bases
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1-5-10-the-watson-crick-model
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1-5-2-nucleotide-structure-and-the-phosphodiester-bond
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1-6-atp-water-and-inorganic-ions4 主题
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2-cell-structure2-1-cell-structure7 主题
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2-2-the-microscope-in-cell-studies4 主题
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2-3-cell-division-in-eukaryotic-and-prokaryotic-cells8 主题
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2-4-cell-membranes-and-transport7 主题
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2-5-cell-recognition-and-the-immune-system7 主题
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2-6-vaccines-disease-and-monoclonal-antibodies6 主题
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3-exchange-and-transport3-1-adaptations-for-gas-exchange6 主题
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3-2-human-gas-exchange10 主题
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3-2-1-the-human-gas-exchange-system
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3-2-2-dissecting-the-gas-exchange-system
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3-2-3-microscopy-and-gas-exchange-surfaces
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3-2-4-investigating-gas-exchange
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3-2-5-the-alveolar-epithelium
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3-2-6-ventilation-and-gas-exchange
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3-2-8-the-effects-of-lung-disease
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3-2-9-pollution-and-smoking-data
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3-2-10-risk-factor-data
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3-2-11-correlations-and-causal-relationships
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3-2-1-the-human-gas-exchange-system
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3-3-digestion-and-absorption5 主题
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3-4-mass-transport-in-animals6 主题
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3-5-the-circulatory-system-in-animals8 主题
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3-6-mass-transport-in-plants6 主题
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4-genetics-variation-and-interdependence4-1-dna-genes-and-chromosomes7 主题
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4-2-dna-and-protein-synthesis6 主题
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4-3-genetic-diversity-mutations-and-meiosis7 主题
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4-4-genetic-diversity-and-adaptation6 主题
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4-5-species-and-taxonomy4 主题
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4-6-biodiversity9 主题
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5-energy-transfers-in-and-between-organisms-a-level-only5-1-photosynthesis-a-level-only5 主题
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5-2-respiration-a-level-only7 主题
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5-3-energy-and-ecosystems-a-level-only9 主题
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5-4-nutrient-cycles-a-level-only4 主题
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6-organisms-respond-to-changes-in-their-environments-a-level-only6-1-response-to-stimuli-a-level-only12 主题
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6-1-1-survival-and-response
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6-1-2-growth-factors-in-flowering-plants
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6-1-3-indoleacetic-acid-iaa
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6-1-4-taxes-and-kinesis
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6-1-5-reflex-arcs
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6-1-6-required-practical-investigating-animal-movement
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6-1-7-the-pacinian-corpuscle
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6-1-8-pacinian-corpuscles-generator-potential
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6-1-9-investigating-touch-and-temperature-receptors
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6-1-10-the-human-retina
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6-1-11-myogenic-stimulation-of-the-heart
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6-1-13-heart-rate
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6-1-1-survival-and-response
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6-2-nervous-coordination-a-level-only10 主题
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6-3-skeletal-muscles-a-level-only6 主题
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6-4-homeostasis-a-level-only11 主题
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6-4-1-principles-of-homeostasis
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6-4-2-negative-feedback
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6-4-3-glucose-concentration-and-insulin
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6-4-4-glucose-regulation-glucagon
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6-4-5-glucose-regulation-adrenaline
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6-4-6-glucose-regulation-the-liver
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6-4-7-diabetes
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6-4-8-required-practical-determining-the-concentration-of-glucose-in-urine
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6-4-9-nephron-structure
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6-4-10-nephron-function
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6-4-11-control-of-blood-water-potential
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6-4-1-principles-of-homeostasis
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7-genetics-populations-evolution-and-ecosystems-a-level-only7-1-inheritance-a-level-only6 主题
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7-2-populations-a-level-only3 主题
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7-3-evolution-a-level-only5 主题
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7-4-populations-in-ecosystems-a-level-only7 主题
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8-the-control-of-gene-expression-a-level-only8-1-genetic-mutations-a-level-only2 主题
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8-2-regulation-of-gene-expression-a-level-only11 主题
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8-2-1-totipotent-cells
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8-2-2-stem-cells
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8-2-3-the-use-of-stem-cells
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8-2-4-producing-tissue-cultures-of-explants
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8-2-5-regulation-of-transcription
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8-2-6-evaluating-data-about-genetic-expression
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8-2-7-epigenetics
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8-2-8-epigenetics-and-disease
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8-2-9-rna-interference
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8-2-10-two-types-of-tumours
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8-2-11-tumour-development
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8-2-1-totipotent-cells
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8-3-using-genome-projects-a-level-only4 主题
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8-4-gene-technologies-a-level-only13 主题
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8-4-1-recombinant-dna-technology
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8-4-2-producing-fragments-of-dna
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8-4-3-investigating-the-specificity-of-restriction-enzymes
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8-4-4-polymerase-chain-reaction
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8-4-5-culture-of-transformed-host-cells
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8-4-6-uses-of-recombinant-dna-technology
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8-4-7-dna-probes-and-dna-hybridisation
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8-4-8-screening-patients
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8-4-9-genetic-counselling-and-personalised-medicine
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8-4-10-variable-number-tandem-repeats
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8-4-11-gel-electrophoresis
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8-4-12-genetic-fingerprinting
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8-4-13-uses-of-genetic-fingerprinting
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8-4-1-recombinant-dna-technology
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exam-guidance-and-skillsessay-guidance3 主题
how-to-plan-and-structure-your-essay
Planning your essay
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You should aim to spend
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5–10 minutes planning your essay
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around 40 minutes writing your essay
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Aim to choose at least 4 different topics from across the specification that are relevant to the theme of the question
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Including 5 topics is an even better way to show breadth of knowledge
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Your essay plan should allow you to organise your ideas clearly, but also be concise and quick to produce
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For example:
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concept maps are visual diagrams with branches linking key ideas to the essay theme
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E.g. a spider diagram or mind map places the essay title in the centre and branch out with topic headings, keywords, and examples
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bullet-point lists can use subtitles from each of the chosen 4–5 topic areas, with 1–2 key points or examples under each title
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a table can contain columns for topic title, key concepts and links to the title
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Example: planning with a concept map
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A concept map plan could be produced as follows:
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read and understand the theme of the question
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consider the course as a whole and list all possible linked topics
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write the title of your essay in the centre of a blank space on your paper
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choose 4–6 topics from your list and add a branch to your central title for each topic
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add another set of branches to each topic to note specific examples and key ideas to include within your paragraphs
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Examiner Tips and Tricks
Practise producing concept maps using previous essay titles from AQA exam papers. This will help you to consolidate your understanding of the course and build confidence in drawing connections between different topics.
Writing your essay
Essay structure and content
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Aim to produce 4-5 well-developed paragraphs; one for each topic area in your essay
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Ideally, choose topics from different parts of the course to demonstrate breadth of knowledge
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Each paragraph should:
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introduce a relevant biological concept
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provide a detailed explanation of the concept that uses accurate terminology
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This must be at A level standard; GCSE-level content will receive less credit
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Spelling doesn’t need to be perfect everywhere, but key terms must be clearly identifiable
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link the concept clearly back to the essay theme
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include specific examples
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You can ensure that each paragraph answers the question directly by:
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referring to the title explicitly in the first sentence
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using linking statements to explain why the concept that you’re describing is important in the overall context of the essay, e.g.:
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“This demonstrates the importance of…”
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“This contributes to the organism’s ability to…”
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How to achieve top-band marks
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To reach the very top bands of the mark scheme you need to show:
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accurate knowledge at A level standard
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broad knowledge across the A level specification
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knowledge beyond the specification
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This shows the examiner that you’ve developed a deeper understanding of biology and made connections beyond the classroom
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Examples of materials that extend beyond the specification include:
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case studies
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E.g. how the structure of viral receptors influences hosts in SARS-CoV-2
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named examples that are not explicitly mentioned in the spec
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E.g. diseases, organisms, or enzymes
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current developments in science
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E.g. CRISPR-Cas9 when discussing gene expression or receptors
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Sources of content that extends beyond the specification include:
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textbooks, e.g. in a ‘did you know?’ or a ‘spec+’ box
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news articles about current scientific breakthroughs
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science documentaries
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science content creators on social media
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Examiner Tips and Tricks
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Use your plan to stay focused and stick to relevant material
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Explain ideas accurately in full A-level depth and using correct scientific terminology
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Breadth of knowledge is crucial, so avoid spending too long writing about one topic in detail at the expense of others