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IB Biology Question Bank

Practice IB Biology questions by syllabus topic with past-paper context, marks, difficulty and free previews from Eduninja.

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Syllabus topics

A1.1 Water A1.2 Nucleic acids A2.1 Origins of cells A2.2 Cell structure A2.3 Viruses [HL only] A3.1 Diversity of organisms A3.2 Classification and cladistics [HL only] A4.1 Evolution and speciation A4.2 Conservation of biodiversity B1.1 Carbohydrates and lipids B1.2 Proteins B2.1 Membranes and membrane transport B2.2 Organelles and compartmentalization B2.3 Cell specialization B3.1 Gas exchange B3.2 Transport B3.3 Muscle and motility [HL only] B4.1 Adaptation to environment