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Free IB Biology SL revision notes, worked examples, AI-marked practice questions and past papers — mapped to the IB DP Biology Standard Level syllabus for the 2026 exam cohort.
IB Biology SL (Standard Level) is the IB Diploma Programme's life-science course. The 2025+ syllabus organises content around four integrated themes — A (Unity and Diversity), B (Form and Function), C (Interaction and Interdependence), and D (Continuity and Change) — taught across 150 teaching hours. Assessment is two externally examined papers plus a teacher-marked Scientific Investigation (Internal Assessment).
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Access IB DP resources, videos, MCQ and structured practice questions, plus quizzes with AI-powered detailed reports — all designed to make your revision simple, focused, and effective
Test your knowledge with the PRE IB quiz.
Test your knowledge with the IB SL Year 1 quiz.
Test your knowledge with the IB SL Year 2 quiz.
Reading the textbook cover-to-cover isn't revision — it's reading. Here's how top Biology students actually use Tutopiya to get exam-ready.
Five tools that work together to take you from first-read to exam-ready.
Sub-topic-level notes with clear explanations, diagrams and worked examples — written for students.
Short walkthroughs that break down the concepts most students get stuck on.
Instant feedback on every answer, plus a report showing exactly which sub-topics to revise next.
Real past papers with official marking schemes. Practise timing and pacing, not just content.
Thousands of MCQ and structured questions with step-by-step worked solutions.
All 11 topics in the IB Biology SL syllabus — click any topic to open notes, videos and an AI-marked quiz.
Answers to the questions Biology students ask most before they start revising.
Pick a topic above and dive into the notes, videos, practice questions and AI-marked quizzes — built around the BI syllabus.