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AP Biology practice questions - frequently asked questions

Plain answers about how AP Biology Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real AP Biology exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The AP Biology exam spans 8 domains: Chemistry of Life (8-11%); Cell Structure and Function (10-13%); Cellular Energetics (12-16%); Cell Communication and Cell Cycle (10-15%); Heredity (8-11%); Gene Expression and Regulation (12-16%); Natural Selection (13-20%); Ecology (10-15%). Every practice question on this site is tagged to one of these domains.

The AP Biology exam has 66 questions and is completed in 3 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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