About
What is AP Bio Lab?
A free study site for AP Biology. No accounts required, no ads, no catch. It covers all 8 AP Biology units with short lessons, diagrams, flashcards, and practice questions that look and feel like the real exam.
What you get
- 01 Lessons for every topic in all 8 AP Biology units, with labeled diagrams.
- 02 Flashcards for the vocabulary you need to know cold.
- 03 Multiple-choice practice with explanations for every answer.
- 04 Free-response practice with scoring guides, so you can grade yourself like an AP reader would.
- 05 A full mock exam when you want to test yourself under exam conditions.
How to use it
Pick a unit and read the lessons. Drill the flashcards. Then try the practice questions for that unit and see where you stand. Short, regular sessions beat cramming the night before the exam.
How we keep it accurate
- 01 Every lesson and question is mapped to a unit and topic in the AP Biology course framework.
- 02 Questions are labeled by level - Foundation, AP Standard, or AP Challenge - and by the science practice they test.
- 03 Explanations say why the right answer works and why each wrong choice is tempting.
- 04 Found a mistake? Use the "Report a problem" link under any practice question. We read every report and fix errors.
The fine print
AP Bio Lab is an independent study resource and is not affiliated with or endorsed by the College Board. The questions here are original and written to match the style of the AP Biology exam - they are not taken from real exams. AP and Advanced Placement are registered trademarks of the College Board.