An independent AP Biology study resource

AP Biology Study Guide

Study all eight AP Biology units through concise notes, visual explanations, flashcards, multiple-choice questions, and free-response practice — all aligned with the content and scientific skills assessed in AP Biology.

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8 AP Biology units

Detailed notes covering the College Board AP Biology topics, grouped into manageable lessons.

28 focused lessons

Concise lessons spanning all eight AP Biology units, with diagrams and key terms.

AP-style practice

AP-style MCQs and original FRQ practice with explanations and point-based scoring guides.

Jump into a unit

Unit 1 · 8–11%

Chemistry of Life

Unit 2 · 10–13%

Cell Structure & Function

Unit 3 · 12–16%

Cellular Energetics

Unit 4 · 10–15%

Cell Communication & Cell Cycle

Unit 5 · 8–11%

Heredity

Unit 6 · 12–16%

Gene Expression & Regulation

AP Bio Lab is an independent study resource and is not affiliated with or endorsed by the College Board. AP® and Advanced Placement® are registered trademarks of the College Board.