Theme B: Form and Function
This unit explores the core biological principle that structure determines function, spanning from biological macromolecules at the molecular level to organ systems in human physiology. It makes up roughly a quarter of your overall IB SL Biology exam score.
📖Study Guide
In-depth bilingual notes with worked past paper examples.
✍️Practice Exam Coming Soon
Timed practice questions with mark scheme grading. Coming soon.
🎴Flashcards Coming Soon
Spaced repetition for key concepts and definitions. Coming soon.
📊Visualizer Coming Soon
Interactive plots and diagrams to build intuition. Coming soon.
Stuck on a specific question?
Snap a photo or paste your problem — Ollie (our AI tutor) walks through it step-by-step with diagrams.
Try Ollie free →
Snap a photo or paste your problem — Ollie (our AI tutor) walks through it step-by-step with diagrams.
Try Ollie free →