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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. In reference to membrane potential (Em) and equilibrium potential (Ex) - which way do ions diffuse?






2. What direction does the primitive gut rotate? What is its axis of rotation?






3. What are the three Beta - lactamase inhibitors?






4. What structure of the knee is described thus? - Prevents anterior displacement and has lateral - to - medial attachment on the tibia






5. What type of test asks a patient to draw a scene - attempting to find out the individual's unconscious perceptions in his or her life?






6. Is an anti - HAV IgG Ab associated with immunization or recent infection?






7. Active protein transport requires a...






8. What is the size of a positive PPD test for the following? (Reactive) x Healthy suburban male without any medical illnesses






9. Reinke crystals






10. What is the drug of choice for treating a patient with hyperuricemia due to overproduction of uric acid?






11. What factors are needed for elongation in prokaryotes?






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






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






14. What small - to medium - sized vasculitis is seen in a 35-year - old man who is a heavy smoker presenting with claudication symptoms in the upper and lower extremities?






15. What T- cell surface projection recognizes and reacts to foreign Ags (presented by APCs)?






16. What endotoxin receptor is the best marker for macrophages?






17. If you order a V/Q scan for suspected pulmonary emboli - is the filling defect seen on the ventilation or perfusion side?






18. What AR disorder of copper metabolism can be characterized by Kayser - Fleischer rings - decreased ceruloplasmin levels - and increased urinary copper excretion and tissue copper levels?






19. What is the most common one? - Primary tumor metastasis to the bone






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






21. With a decrease in arterial diastolic pressure - what happens to x TPR?






22. What is the DOC for trigeminal neuralgia?






23. What is the term for the number of new events occurring in a population divided by the population at risk?






24. What two bacteria are associated with drinking unpasteurized milk?






25. Which carcinoma






26. What apoprotein on HDL activates lecithin - cholesterol acyltransferase (LCAT)?






27. What pneumoconiosis is associated with exposure to the following occupations or materials? - Shipyards - brake linings - insulation - and old building construction






28. What is the term for the negative resting membrane potential becoming more negative?






29. A patient with a history of epilepsy goes to the ER with sedation - gait ataxia - diplopia - and vertical nystagmus. Which anticonvulsant overdose resulted in the patient's symptoms?






30. Which antimicrobial class may cause tooth enamel dysplasia and decreased bone growth in children?






31. What CNS developmental abnormality is associated with 90% of syringomyelia?






32. What type of hepatitis has the highest mortality rate among pregnant women?






33. What drug of choice for ascaris causes neuromuscular blockade of the worm?






34. What pH (acidotic or alkalotic) is needed for pepsinogen to pepsin conversion?






35. With what stage of sleep are night terrors associated?






36. What syndrome is characterized by sweating - insomnia - nausea - diarrhea - cramps - delirium - and general restlessness secondary to MAOI and SSRI in combination?






37. Should you refer a patient to a form of folk medicine even if you don't believe in it?

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38. What determines the effective osmolarity of the ICF and the ECF compartments?






39. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Asbestos






40. What somatomedin serves as a 24- hour marker of GH secretion?






41. What are the four Ds of niacin deficiency?






42. How many carbons do androgens have?






43. What Brodmann area is associated with x Primary auditory cortex?






44. What two drugs - when mixed - can lead to malignant hyperthermia?






45. What is the first epidermal layer without organelles and nuclei






46. How much of a vessel must be stenosed to cause sudden cardiac death?






47. What three carcinomas are associated with EBV?

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48. What is the most common one? - Malignant carcinoma of the ovaries






49. What hormone - produced by the syncytiotrophoblast - stimulates the production of progesterone by the corpus luteum?






50. Do the following structures pick up stain from hematoxylin or eosin? - Bacteria







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