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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. Are white rami preganglionic or postganglionic fibers?






2. What condition results from a deficiency in the enzyme hexosaminidase A?






3. Name the product or products of arachidonic acid: x Chemotactic for neutrophils






4. Per Freud - with What part of the unconscious are sex and aggression (instincts) associated?






5. What disorder of aldosterone secretion is characterized by x Increased total body sodium - ECF volume - plasma volume - BP - and pH; decreased potassium - renin and AT II activity; no edema?






6. What is the most common one? - Tumor in individuals exposed to asbestos






7. What are the growth factors released from the liver called?






8. What is found in the R group if the AA is acidic? Basic?






9. Which way does the Hgb - O2 dissociation curve shift in patients with CO poisoning?






10. Are bactericidal.






11. What subtype of schizophrenia is characterized by x Childlike behaviors - unorganized speech and behaviors - poor grooming - incongruous smiling and laughter - and the worst prognosis?






12. What MHC class functions as a target for elimination of abnormal host cells?






13. What disorder of bone remodeling results in thick - weak bones and is associated with high - output cardiac failure?






14. Lewy bodies






15. Name four chemotactic factors for neutrophils.






16. Fixing impulses by acting out the opposite of an unacceptable behavior






17. What are the adult remnants of the following structures? - Foramen ovale






18. Name the antimicrobial agent whose major side effect is listed - CN VIII damage (vestibulotoxic)






19. What operant conditioning therapy or modification is described as x Stopping the reinforcement that is leading to an undesired behavior?






20. What virus lies dormant in the x Sensory ganglia of S2 and S3?






21. What is the volume of distribution (increased or decreased) of a drug when a large percentage is protein bound?






22. What is the amount in liters and percent body weight for the following compartments? - Interstitial fluid






23. What disorder is characterized by autoantibodies to IF?






24. After a longstanding left - to - right shunt reverses - causing cyanosis - and becomes a right - to - left shunt - What is it termed?

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25. What childhood pathology involves anterior bowing of the tibia - epiphyseal enlargements - and costochondral widening - with the endochondral bones being affected?






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






27. What hormone - produced by Sertoli cells - if absent would result in the formation of internal female structures?






28. What AA is broken down into N2O - causing an increase in cyclic guanosine monophosphate (cGMP) of smooth muscle - hence vasodilation?






29. Name these mature defense mechanisms: x Converting an unacceptable impulse to a socially acceptable form (Hint: it is the most mature of all defense mechanisms)






30. Where are the lowest resting PO2 levels in a resting individual?






31. Is the bound form or free form of a lipid - soluble hormone responsible for the negative feedback activity?






32. What substance is secreted by parietal glands and is required for life?






33. What is the relationship between ventilation and PCO2 levels?






34. Name the most common type or cause - Chancre






35. Name the type of necrosis - Soft - friable - cottage - cheese appearing; characteristically seen in TB






36. What AA is a precursor of the following substances? - GABA






37. What type of correlation compares two ordinal variables?






38. What Brodmann area is associated with x Somatosensory association cortex?






39. In regard to motor development during infancy - choose the motor response that happens first - Palms up or down






40. Name the associated chromosomal translocation - Adult familial polyposis






41. Name the ventricular muscle membrane channel: x Always open






42. What form of continuous DNA - used in cloning - has no introns or regulatory elements?






43. What protein allows Mycoplasma to attach to the respiratory epithelium?






44. What ocular ganglion is affected if the pupil on the affected side sluggishly responds to light with normal accommodation?






45. What congenital small bowel outpouching is a remnant of the vitelline duct?






46. What vasculitis affects a 30-year - old Asian female having visual field deficits - dizziness - decreased blood pressure - and weakened pulses in the upper extremities?






47. What pattern of genetic transmission is characterized by no transmission from M - maternal inheritance - and the potential for the disease to affect both sons and daughters of affected F?






48. What organ must metastasize for carcinoid heart disease to occur?






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






50. What is the drug of choice for penicillin - resistant gonococcal infections?