United States Medical Licensing Examination Step 1 (USMLE Step 1) Exam Prep
Free practice questions

Free USMLE Practice Questions

1 exam-style questions with answers and explanations. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.

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The USMLE exam has 280 questions and runs 8 hours.

Question 1

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Correct answer: A - A

What's on the USMLE exam

The United States Medical Licensing Examination Step 1 (USMLE Step 1) (USMLE) exam is organized into 11 knowledge domains. These free practice questions are drawn from across them so you can see where you're strong and where to study:

  1. Human Development (1-3%)
  2. Blood & Lymphoreticular/Immune Systems (9-13%)
  3. Behavioral Health & Nervous Systems/Special Senses (10-14%)
  4. Musculoskeletal, Skin & Subcutaneous Tissue (8-12%)
  5. Cardiovascular System (7-11%)
  6. Respiratory & Renal/Urinary Systems (11-15%)
  7. Gastrointestinal System (6-10%)
  8. Reproductive & Endocrine Systems (12-16%)
  9. Multisystem Processes & Disorders (8-12%)
  10. Biostatistics & Epidemiology/Population Health (4-6%)
  11. Social Sciences: Communication and Interpersonal Skills (6-9%)

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