Cells, genetics, evolution, ecology, all the systems.
Real Test
Full-length test
60 questions, 90 min countdown. Same length and pacing as the real exam.
Warmup
Quick practice
Random questions across all topics. No timer, just reps.
Targeted
Practice by topic
Drill one skill until it stops scaring you.
Stuck? Ask the AI tutor.
Adaptive help that explains your mistakes step-by-step.
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.