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AQA A-Level Year 13 Biology Topic Questions

AQA A-Level Biology Year 13 exam questions by topic — free PDFs with mark schemes. Topics 5–8: energy transfer, responses, genetics and gene control.

Last updated: 4 September 2026

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Topic 5 - Energy Transfer in and Between Organisms

Question Paper	Mark Scheme
Photosynthesis	Photosynthesis
Respiration	Respiration
Energy and Ecosystems	Energy and Ecosystems
Nutrient Cycles	Nutrient Cycles

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Topic 6 - Organisms Respond to Changes in the Environment

Question Paper	Mark Scheme
Stimuli and Response	Stimuli and Response
Nerve Impulses	Nerve Impulses
Receptors	Receptors
Synaptic Transmission	Synaptic Transmission
Muscle Contraction	Muscle Contraction
Control of Heart Rate	Control of Heart Rate
Control of Blood Glucose	Control of Blood Glucose
Osmoregulation	Osmoregulation

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Topic 7 - Genetics, Populations, Evolution and Ecosystems

Question Paper	Mark Scheme
Inheritance	Inheritance
Hardy Weinberg	Hardy Weinberg
Evolution and Speciation	Evolution and Speciation
Succession	Succession
Populations in Ecosystems	Populations in Ecosystems

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Topic 8 - The Control of Gene Expression

Question Paper	Mark Scheme
Cancer	Cancer
Gene Mutations	Gene Mutations
Stem Cells	Stem Cells
Regulation of Transcription and Translation	Regulation of Transcription and Translation
Gene Technologies	Gene Technologies

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