Free AP Biology diagnostic
Free AP Biology practice test
15 questions from all eight units in 23 minutes. Then your score in each unit and a short lesson on the one to fix first.
- Four-option multiple choice, at the pace of Section I.
- A calculator is allowed, as on the exam. No account.
- Move back and forth and flag questions.
The real exam
| Unit | Share of Section I |
|---|---|
| Unit 1: Chemistry of Life | 8–11% |
| Unit 2: Cells | 10–13% |
| Unit 3: Cellular Energetics | 12–16% |
| Unit 4: Cell Communication and Cell Cycle | 10–15% |
| Unit 5: Heredity | 8–11% |
| Unit 6: Gene Expression and Regulation | 12–16% |
| Unit 7: Natural Selection | 13–20% |
| Unit 8: Ecology | 10–15% |
Section I: 60 multiple-choice questions in 90 minutes. Section II: 6 free-response questions in 90 minutes. Each section is half the score, and a calculator is allowed on both.
What your result means
You get questions right in each unit, so you can see where to start. AP scores from 1 to 5 come from College Board's own conversion of both sections.
Teaching AP Biology?
Set this as a 23-minute check. Each student sees a score in every unit, and nobody needs an account.
Independent practice for the AP Biology exam. Not affiliated with or endorsed by College Board. AP and Advanced Placement are trademarks of College Board. College Board's own exam page is on apcentral.collegeboard.org.