Cells, genetics, evolution, ecology, all the systems.
Session settings
Locked once you start.Feedback
Text size
You can still adjust zoom mid-test with A− / A+.
Real Test
Full-length test
60 questions, 90 min countdown. Same length and pacing as the real exam.
Best on desktop - a computer is recommended for full-length tests.
Warmup
Quick practice
Random questions across all topics. Pick a difficulty to dial up the challenge.
Targeted
Practice by topic
Drill one skill until it stops scaring you.
Smart Mix
AI smart quiz
Pulls original, exam-style questions from the AP Biology bank by topic + difficulty, and tops up with fresh AI when the bank runs short.
AI · Fresh
Endless AI questions
Brand-new questions written by AI every time — no repeats. Great when you've drilled the bank dry.
Stuck? Ask the AI tutor.
Adaptive help that explains your mistakes step-by-step.
Practice AP Biology free response
4 rubric-graded prompts. AI scores against an exam-style rubric.
Exam blueprint
60 MCQ + 6 FRQ
Unit 1Chemistry of Life8–11%
Unit 2Cell Structure and Function10–13%
Unit 3Cellular Energetics12–16%
Unit 4Cell Communication and Cell Cycle10–15%
Unit 5Heredity8–11%
Unit 6Gene Expression and Regulation12–16%
Unit 7Natural Selection13–20%
Unit 8Ecology10–15%
Source: College Board Course & Exam Descriptions, 2025–26.