AP Biology
The AP Biology exam is 3 hours long and split evenly: 60 multiple-choice questions worth 50% of your score, and 6 free-response questions — 2 long and 4 short — worth the other 50%. A calculator is permitted throughout, and an equations and formulas sheet is provided. The course is 8 units, from the chemistry of life through ecology, and the exam leans heavily on interpreting experiments and data rather than recall.
Nuros gives you the whole of AP Biology: a note for every topic across the 8 units, free-response practice marked against the rubric rows rather than checked for a keyword, and practice exams that tell you which concepts — not just which questions — are costing you points.
Free to start · No credit card · 8 units · 60 topics
The AP Biology exam format
Exam length
3 hours
2027 exam date
Mon, May 3, 2027
Course size
8 units
Hybrid digital — multiple choice in College Board's Bluebook app, free response handwritten in a paper booklet.
Section I — Multiple choice
60 questions · 1hr 30min · 50% of score
Discrete questions plus sets that share a diagram or data presentation. Tests explanation, data analysis, and supporting claims with evidence.
Section II — Free response
6 questions · 1hr 30min · 50% of score
2 long questions and 4 short questions, covering experimental design, graphing and data analysis, and predicting the effect of a change in a biological system.
Exam format, timings and date from College Board's official AP Biology exam page, last checked September 17, 2026. Nuros is not affiliated with or endorsed by College Board. Always confirm exam-day details with your AP coordinator.
What the Nuros AP Biology course covers
8 units and 60 topics, each written as a structured note with practice attached — not a summary of the syllabus.
- Chemistry of Life7 topics
- Cells10 topics
- Cellular Energetics5 topics
- Cell Communication and Cell Cycle6 topics
- Heredity5 topics
- Gene Expression and Regulation8 topics
- Natural Selection12 topics
- Ecology7 topics
Study AP Bio in a loop, not a straight line
1. Learn it
A structured note for every topic in the course, with worked examples and diagrams rather than a wall of bullet points.
2. Test it
Unit quizzes and full-length practice exams in the real paper format, with written answers marked against the rubric rows rather than checked for a keyword.
3. See the gaps
Every attempt updates a mastery score per concept, so the feedback names the concept costing you marks instead of handing you a percentage.
4. Close them
ARC — the Adaptive Review Cycle — re-explains the weak concepts and brings them back on a spaced schedule, with fresh questions, until they hold.
AP Biology questions students ask
Eight: Chemistry of Life, Cells, Cellular Energetics, Cell Communication and Cell Cycle, Heredity, Gene Expression and Regulation, Natural Selection, and Ecology.
Less than students expect. Both sections are built around applying concepts — reading an experiment, analysing data, predicting what a change does to a system. Recall is the floor, not the exam.
Yes, a calculator is permitted for the whole exam, and College Board provides reference materials including an equations and formulas sheet.
Taking more than one AP?
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