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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 disorder leads to IgG autoantibodies to the TSH receptor?






2. What small - facultative gram - negative intracellular rod's transmission is associated with unpasteurized dairy products and undulant fever?






3. What is the primary end product of pyrimidine synthesis?






4. If the family member of a patient asked you to withhold information - would you?






5. What type of healing occurs in a clean surgical incision?






6. What vitamin is a component of the coenzyme thiamine pyrophosphate (TPP)?






7. Testing of a drug in a small group of volunteers without the disease is a component of which phase of clinical drug testing?






8. Panic attacks can be induced by __________ or carbon dioxide.






9. What is the first sign of megaloblastic anemia on a peripheral blood smear?






10. What statistical test compares the means of groups generated by two nominal variables by using an interval variable?






11. Are hemorrhagic cerebral infarcts more commonly associated with embolic or thrombotic occlusions?






12. What viral infection is associated with black vomit?






13. What causes slow writhing movements (athetosis)?






14. In a topographical arrangement of the cerebellar homunculus map - What area or lobe x Controls the axial and proximal musculature of the limbs?






15. What type of fiber or fibers are carried in (answer motor - sensory - or both) x Dorsal rami?






16. What bile pigment is formed by the metabolism of bilirubin by intestinal bacteria - giving stool its brown color?






17. Name the MCC - Pneumonia in a patient with atypical bird exposure and hepatitis






18. What Vi - encapsulated gram - negative motile anaerobic rod that produces H2S is associated with enteric fever - gastroenteritis - and septicemia?






19. What is the DOC for coccidioidomycosis?






20. Name four chemotactic factors for neutrophils.






21. What three organs are necessary for the production of vitamin D3(cholecalciferol)?






22. What frontal lobe cortex is associated with organizing and planning the intellectual and emotional aspect of behavior?






23. What is the only 17- hydroxysteroid with hormonal activity?






24. What is the only sphingolipid that contains choline and PO4?






25. If you double the infusion rate of a drug - how long will it take to reach steady state?






26. What is the rate - limiting step in the production of steroids?






27. How long is the transit time through the large intestine?






28. Name the nephritic disease based on the immunofluorescent staining - Smooth and linear pattern of IgG and C3 in the GBM






29. What is the venous and arterial stretch receptors' function regarding the secretion of ADH?






30. During What embryonic week does the intraembryonic coelom form?






31. Has analgesic and antipyretic activities but lacks anti - inflammatory effects.






32. What AA is a precursor of the following substances? - NAD






33. What happens to V/Q ratio if a thrombus is lodged in the pulmonary artery?






34. What cell membrane structure increases the surface area of a cell and has actin randomly assorted within its structure?






35. What two pathologic conditions occur when the gut does not return to the embryo?






36. What color do fungi stain with PAS? Silver stain?






37. Name the hepatitis virus based on the following information - Enveloped DNA hepadnavirus






38. What molecule that is needed to trigger T cell activation is noncovalently linked to TCR?






39. The DSM- IV- TR is scored on the basis of five axes of diagnosis. In What axis would you place x Global assessment of function?






40. What is the term for processing an APC's pinocytosed material by fusing with a lysosomal granule and cleaving the Ag into peptide fragments?






41. What thalamic relay nucleus do the mammillary bodies project to?






42. At What age do children begin to understand the irreversibility of death?






43. Which is the conditioned response - the conditioned stimulus - the unconditioned response - the unconditioned stimulus in this case? A patient has blood withdrawn and faints. The next time she goes to have blood taken - she faints at the sight of the






44. Caf






45. What nonmotile gram - negative - non - lactose - fermenting facultative anaerobic rod uses the human colon as its only reservoir and is transmitted by fecal - oral spread?






46. What three structures are in contact with the left colic flexure? With the right colic flexure?






47. Gas gangrene is associated with which Clostridium species?






48. What is the name of the major chemotactic agent released from x The blood serum? (Hint: it is a complement factor.)






49. What is the term to describe homosexuals who x Are uncomfortable with their own person and disagree with their sense of self?






50. Name the antidote - Lead