This is the most trusted source of review questions for the USMLE Step 1 - featuring three hundred-question practice exams! This book provides a review that ensures that the real test is not your first test. It is practical, effective, comprehensive, authoritative, and up-to-date. It offers the best preparation available for the USMLE Step 1. The best choice for great performance on the exam, "Lange Q&A: USMLE Step 1" features: more than 1100 board-format Q&A's with detailed rationales for both right and wrong answers; three comprehensive 100-question practice exams; seven subject-specific chapters for pinpoint review; and, chapters covering the USMLE Step 1's main topics: anatomy, physiology, biochemistry, microbiology, pathology, pharmacology, and behavioral science.