A LEVEL

AQA A-Level Year 12 Biology Topic Questions

AQA A-Level Biology Year 12 exam questions by topic — free PDFs with mark schemes. Topics 1–4: biological molecules, cells, exchange and genetics.

Last updated: 4 September 2026

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Question Paper	Mark Scheme
Carbohydrates	Carbohydrates
Lipids	Lipids
Proteins and Enzymes	Proteins and Enzymes
DNA Structure and Replication	DNA Structure and Replication
ATP, Water and Inorganic Ions	ATP, Water and Inorganic Ions

Question Paper	Mark Scheme
DNA Structure	DNA Structure
Protein Synthesis	Protein Synthesis
Meiosis	Meiosis
Genetic Diversity and Natural Selection	Genetic Diversity and Natural Selection
Classification and Taxonomy	Classification and Taxonomy
Biodiversity	Biodiversity

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