Practice · Biology · 2025 syllabus · Beta
IB Biology question bank, topic by topic.
207 exam-style questions over 40 topics. Pick a topic, answer as you would in the exam, then mark yourself against the mark scheme. Progress saves here, and on every device with a free account.
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A Unity and diversity
B Form and function
C Interaction and interdependence
D Continuity and change
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Every Biology and Chemistry question here is original, written for practice in the style of the papers set since the 2025 syllabus, with invented data. Developed independently from the International Baccalaureate Organization, which has not endorsed it. Found a mistake? Email vytis@limeadmissions.com with the question id.