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IB Biology Questions



Self-marking revision quizzes

 

All of our questions are written by experienced IBDP teachers and closely match typical questions on recent papers.

New!! A.I. support being rolled out for corrections!
Take a look at topic A (SL quizzes)

 

Micro (µ) IB

Mini-topic Quizzes: 10 questions in under 10 mins.

🔒 Unlock all of the IB quizzes with a premium account!
More info here

SL + HL Topics
A1.1 Water
A1.2 Nucleic Acids
A2.2 Cell Structure +B2.2 organelles
A3.1 Diversity of Organisms
A4.1 Evolution +D4.1 Natural Selection
A4.2 Conservation of Biodiversity
B1.1 Carbohydrates +lipids
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B1.2 Proteins
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B2.1 Cell Membranes
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B2.3 Cell Specialisation
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B3.1 Gas Exchange
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B3.2 Transport
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B4.2 Adaptation to Environment
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B4.3 Ecological Niches
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C1.1 Enzymes
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C1.2 Cell Respiration
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C1.3 Photosynthesis
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C2.2 Neural Signalling
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C3.1 Integration of Body Systems
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C3.2 Defence Against Disease
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C4.1 Populations + communities
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C4.2 Transfers of Energy + matter
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D1.1 DNA replication
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D1.2 Protein Synthesis
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D1.3 Mutations + Gene Editing
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D2.1 Cell and Nuclear Division
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D2.3 Water Potential
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D3.1 Reproduction
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D3.2 Inheritance
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D3.3 Homeostasis
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D4.2 Stability & Change
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D4.3 Climate Change
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HL Only Topics
A1.1 Water AHL
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A1.2 Nucleic Acids AHL
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A2.1 Origin of Cells
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A2.2 Cell Structure AHL
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A2.3 Viruses
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A3.1 Diversity of Organisms AHL
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A3.2 Classification & Cladistics
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A4.1 Evolution AHL +D4.1 Natural Selection
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B1.2 Proteins AHL
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B2.1 Cell Membranes AHL
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B2.3 Cell Specialisation AHL
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B3.1 Gas Exchange AHL
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B3.2 Transport AHL
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B3.3 Muscles & Motility
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C1.1 Enzymes AHL
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C1.2 Cell Respiration AHL
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C1.3 Photosynthesis AHL
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C2.1 Chemical Signalling
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C2.2 Neural Signalling AHL
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C3.1 Integration of Body Systems AHL
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D1.1 DNA Replication AHL
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D1.2 Protein Synthesis AHL
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D1.3 Mutations + Gene Editing AHL
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D2.1 Cell+Nuclear Division AHL
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D2.2 Gene Expression
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D2.3 Water Potential AHL
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D3.1 Reproduction AHL
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D3.2 Inheritance AHL
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D3.3 Homeostasis AHL
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D4.2/4.3 Stability & Climate AHL
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Complete for the 2025 syllabus!

All of these micro tests are quick and easy to complete - great for revision in small topic sections!