AP Biology
Practice test built to the official AP Biology assessment blueprint for Grade 9 — same domains, same weighting, instant scoring with an explanation for every question.
Content updated September 2026
- Built to the real blueprintSame domains at the same weight as the official test.
- Every answer explainedInstant scoring, with the reasoning for each question.
- Miss it, master itWrong answers come back as a short scored practice set until you fix them.
- 66
- Questions
- 60
- Minutes
- 33/ 66
- Qualifying score
- No negative marking
- On-screen calculator
- Question formats
- Multiple Choice
- Free Response
What’s on the test
The 66 questions mirror the official blueprint below — every domain appears at its real weight, so your score predicts readiness for the actual administration.
AP Biology
| Content Standard | Number of Items | Percentage |
|---|---|---|
| Unit 1: Chemistry of Life | — | 9% |
| Unit 2: Cell Structure and Function | — | 11% |
| Unit 3: Cellular Energetics | — | 14% |
| Unit 4: Cell Communication and Cell Cycle | — | 12% |
| Unit 5: Heredity | — | 10% |
| Unit 6: Gene Expression and Regulation | — | 14% |
| Unit 7: Natural Selection | — | 15% |
| Unit 8: Ecology | — | 15% |
| TOTAL ASSESSMENT ITEMS | 66 | 100% |
Question Formats
| Format | Count | Marks Each |
|---|---|---|
| Multiple Choice | 60 | 1 |
| Free Response | 6 | 1 |
Administered by: College Board
Frequently asked questions
How many questions are on this AP Biology practice test?
This practice test has 66 questions (multiple choice, free response), matched to the domains and weights of the official blueprint shown above.
How long is the test?
You get 60 minutes, with a live countdown timer on screen — the same time pressure as a real computer-based administration.
Is there negative marking?
No — there is no negative marking on this practice test, so it always pays to attempt every question.
What score counts as passing?
The qualifying score on this practice test is 33 of 66 marks. Your report shows your score and a question-by-question breakdown with explanations the moment you submit.
Can you use a calculator?
Yes — an on-screen calculator is built into the test player, the same way computer-based state assessments provide one.
How do I start, and what does it cost?
Scroll down and press Start — the test runs right on this page, and scoring is instant. Preview questions are free; full-length attempts with detailed score reports are part of a PrepGro plan.
Ready to see where you stand?
The test runs right below — instant score, every answer explained.