USABO VIP Semifinal Practice Exam

USABO — The USA Biology Olympiad (USABO) is administered by the Center for Excellence in Education (CEE) and consists of an Open Exam (50 MC questions, 50 min) and a Semifinal Exam (120 MC questions, 150 min) covering cell biology, molecular biology, genetics, evolution, plant and animal physiology, ecology, ethology, microbiology, and biosystematics; top scorers advance to National Finals and represent the US at the International Biology Olympiad (IBO).