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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. When the results of a test are compared to findings for a normative group - what form of reference does the objective test use?






2. How many pairs of spinal nerves are associated with x Coccygeal vertebrae?






3. What is the most common one? - Benign tumor of the breast






4. Name the macrophages by location: x Lungs






5. Name the phase of the ventricular muscle action potential based on the following information: x Slight repolarization secondary to potassium and closure of the sodium channels






6. Name the most common type or cause - Pyogenic osteomyelitis






7. Is the Lac operon activated or inactivated in the presence of both glucose and lactose?






8. Name the three benzodiazepines that are not metabolized by the cytochrome P450 enzyme system.






9. What is the DOC for the treatment of the late phase response in an asthmatic attack?






10. At what vertebral levels does the aortic arch begin and end?






11. What are the four DNA oncogenic viruses?






12. Familial hypercholesteremia is due to a mutation in the LDL receptor gene. What chromosome carries it?






13. What somatoform disorder is described as x La belle indiff






14. What type of hypersensitivity is a T cell - mediated response to Ags that are not activated by Ab or complement?






15. From which two substances are phospholipids made?






16. Where is lithium metabolized and excreted?

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17. What is the term for different classes and subclasses of the same gene products?






18. Name the most common cause - Infectious pancreatitis






19. What is the term for the external urethra opening onto the dorsal surface of the penis?






20. What hormone is required for 1 - 25- dihydroxy- vitamin D (1 - 25- diOH- D) to have bone resorbing effects?






21. What is the label given to an individual whose IQ is x 90 to 109






22. What hemoflagellate species is the cause of Chagas disease?






23. Replacing normal affect with 'brain power'






24. What adrenal enzyme deficiency results in hypertension - hypernatremia - increased ECF volume - and decreased adrenal androgen production?






25. The duodenal - jejunal flexure is suspended from the posterior abdominal wall by what?






26. What happens to intraventricular pressure and volume during isovolumetric contraction?






27. What pattern of genetic transmission affects only M and has no M- to - M transmission - and mother is usually an unaffected carrier?






28. What is the term for any region of the respiratory system that is incapable of gas exchange?






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






30. What is the only Rickettsia that is stable in the environment?






31. The elimination of the unfertilized egg. In females - meiosis II is incomplete unless fertilization takes place.






32. With what stage of sleep are nightmares associated?






33. At What age does a child develop x Preferential smile?

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34. What is the maximum rate possible with a given amount of enzyme?






35. The gallbladder functions to...






36. Name the DNA virus x Linear dsDNA; nuclear envelope; icosahedral; replicates in the nucleus






37. What test is used to screen for HIV?






38. What type of bias is it when the information is distorted because of the way it is gathered?






39. What type of scheduled reinforcement states that after a desired response - the reinforcement is given x After a set number of responses?






40. What stromal tumor in males is characterized histologically with crystalloids of Reinke?






41. At What age does IQ stabilize?






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






43. What axis I disorder is characterized by a clinically significant syndrome that affects social - occupational - and/or academic achievement; occurs less than 3 months after a stressor; and abates less than 6 months after the stressor is removed?






44. Are resistant to the effects of aminoglycosides.






45. What is the term for the force the ventricular muscle must generate to expel the blood into the aorta?






46. Have analgesic - antipyretic - anti - inflammatory - and antiplatelet activities.






47. What viruses are associated with cervical carcinoma?






48. Do the following structures pick up stain from hematoxylin or eosin? - Nucleoli






49. What is absorbed in the gallbladder to concentrate bile?






50. What type of resistance system - high or low - is formed when resistors are added in a series?







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