Free AP Prep
HardAP Biology Study Guide & Prep
AP Biology explores life at all scales — from molecular interactions inside cells to ecological relationships among organisms. Students investigate core biological principles through inquiry-based lab work and data analysis.
Units
8
Exam Duration
3 hours 15 minutes
Exam Format
60 multiple choice + 6 free-response questions
Key Topics Covered
- Chemistry of Life & Cellular Structure
- DNA Replication & Gene Expression
- Cell Energetics (Photosynthesis & Cellular Respiration)
- Cell Communication & Cell Cycle
- Heredity & Mendelian Genetics
- Gene Expression & Regulation
- Natural Selection & Evolution
- Ecology & Ecosystems
About the AP Biology Exam
The AP Biology exam tests conceptual understanding and scientific practices across 8 units, from the chemistry of life to ecology. It includes 60 multiple-choice and 6 free-response questions.
All AP exams are administered by the College Board every May. Scores range from 1 to 5. Many colleges grant credit or advanced placement for scores of 3, 4, or 5.