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USMLE Step 1 Prep

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What factors are needed for translation in prokaryotes?






2. Name the most common type or cause - Acute metal poisoning in the United States






3. What water - soluble - vitamin deficiency is associated with cheilosis and magenta tongue?






4. What pathophysiologic disorder is characterized by the following changes in cortisol and ACTH? - Cortisol decreased - ACTH decreased






5. What is the name for the following RBC indices? - Average mass of the Hgb molecule/RBC






6. What is the renal compensation mechanism for acidosis?






7. What is the main factor determining GFR?






8. Which M- protein strain of Streptococcus pyogenes is associated with acute glomerulonephritis?






9. Which PG maintains patency of the ductus arteriosus and is used in the treatment of primary pulmonary HTN?






10. What is the only organ supplied by the foregut artery that is of mesodermal origin?






11. Name the associated chromosome - Patau syndrome






12. Name the DNA virus: x ssDNA; naked; icosahedral; replicates in the nucleus






13. What Brodmann area is associated with x Visual association cortex?






14. What malignant neoplasm of the skin is associated with keratin pearls?






15. What is the size of a positive PPD test for the following? (Reactive) x Posttransplantation patient taking immunosuppressive agents






16. What is the only pharyngeal muscle not innervated by CN X?






17. What is the most common one? - Organism associated with liver abscesses






18. What general pattern of sleep is described by slowing of EEG rhythms (high voltage and slower synchronization) - muscle contractions - and lack of eye movement or mental activity?






19. People who believe that luck - chance - or the actions of others control their fate have an internal locus of control.






20. What antifungal agent is used to treat dermatophyte infections by inhibiting squalene epoxidase?






21. Do the following structures pick up stain from hematoxylin or eosin? - Nuclei






22. The inferior mesenteric artery drains into it.






23. What chromosome is autism linked to?






24. What bone houses the ulnar groove?






25. What viral infection in patients with sickle cell anemia results in aplastic crisis?






26. What is the vector for Leishmania infections?






27. Is linolenic acid an omega -3 or omega -6 fatty acid?






28. Where is the lesion that produces these symptoms when a patient is asked to look to the left? Neither eye can look left with a slow drift to the right






29. Name the type of graft described by these transplants: x From one person to the next (the same species)






30. How many carbons do estrogens have?






31. What topoisomerase makes ssDNA cuts - requires no ATP - relaxes supercoils - and acts as the swivel in front of the replication fork?






32. What is the period between going to bed and falling asleep called?






33. What hormone's release is strongly associated with stage 4 sleep?






34. What gene inhibits apoptosis by preventing the release of cytochrome c from mitochondria?






35. What adrenal enzyme deficiency can be summed up as a mineralocorticoid deficiency - glucocorticoid deficiency - and an excess of adrenal androgens?






36. What negative sense RNA virus is associated with cough - coryza - and conjunctivitis with photophobia?






37. What type of cell surface projection lies on the lateral surface of cells closest to the apex and acts to seal off the outside environment from the rest of the body?






38. What happens to the following during skeletal muscle contraction? - Sarcomere






39. Name the most common type or cause - Rectal bleeding






40. If a sample of DNA has 30% T - What is the percent of C?

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41. What enzyme of pyrimidine synthesis is inhibited by the following? - Hydroxyurea






42. What hormone acts on Granulosa cells?






43. Where are the postganglionic neuron cell bodies - the CNS or the PNS?






44. Replacing normal affect with 'brain power'






45. To What does failure to resolve separation anxiety lead?






46. What type of anemia is the result of a deficiency in intrinsic factor?






47. Being college educated increases a man's risk of having...






48. Via what pathway is glycolysis increased after phagocytosis?






49. Metformin is contraindicated in ________ because of weight gain as its side effect.






50. What is the effect of insulin on protein storage?