Practise like the exam
Start with a drill for any topic, check a whole unit with a practice test, then put it all together in a timed mock exam.
Drills
38 scenario-based drills, one per topic, with feedback that explains the mechanism.
Open the drill libraryMock exam
A half-length, timed exam drawn fresh each time from every unit: 30 multiple-choice questions in 45 minutes, then 2 free-response questions in 40 minutes.
Unit practice tests
Unit 1
Chemistry of Life
11 multiple choice · 2 free response
Unit 2
Cell Structure and Function
11 multiple choice · 2 free response
Unit 3
Cellular Energetics
11 multiple choice · 2 free response
Unit 4
Cell Communication and Cell Cycle
11 multiple choice · 2 free response
Unit 5
Heredity
11 multiple choice · 2 free response
Unit 6
Gene Expression and Regulation
12 multiple choice · 2 free response
Unit 7
Natural Selection
12 multiple choice · 2 free response
Unit 8
Ecology
11 multiple choice · 2 free response
Recent results
AP-style questions written for Operon. AP is a trademark of the College Board, which is not affiliated with and does not endorse this site. These scores are practice estimates, not predicted AP scores.