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






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






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






4. What form of dementia is characterized by onset at age 40 to 50 - rapid progression - infection by a prion - and death within 2 years?

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5. What CNs arise from x The medulla?






6. Describe the organism based on the following information: x Beta - hemolytic Streptococcus sensitive to bacitracin






7. Has no underlying pathology.

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8. Name the type of exudate - given the following examples - Meningococcal infection






9. What is the term of the viral growth period when no viruses can be found intracellularly?






10. What happens to NE levels in x Major depression?






11. Which of the following






12. Name these immature defense mechanisms: x Psychic feelings converted to physical symptoms






13. What protective covering adheres to the spinal cord and CNS tissue?






14. What cell type of the epidermis functions as antigen - presenting cells?






15. What three CNs are associated with conjugate eye movements?






16. Can be secreted.






17. What are the three carboxylase enzymes that require biotin?






18. What type of mortality rate is defined as the number of deaths x From a specific cause per population?






19. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Cardiac muscle






20. What happens to intracellular volume when there is an increase in osmolarity?






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






22. What form of poisoning is associated with bitter almond - scented breath?






23. What is the tumor at the bifurcation of the right and left hepatic ducts?






24. Which class of antiarrhythmics are calcium channel blockers?






25. Which class of antihypertensives is used in the treatment of BPH?






26. Is a marker for increased bone formation.






27. What happens to the following during skeletal muscle contraction? - I band






28. What Ig is associated with mast cell and basophil binding?






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






30. What is the term for chronic necrotizing pulmonary infections resulting in permanent airway dilation and associated with Kartagener syndrome?






31. What is the most common one? - Route for infectious arthritis






32. What is the neurotransmitter at the






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






34. What two AAs have a pKa of 4?






35. What statistical method do you use when analyzing x Case control studies?






36. What are the strongest determinants of gender identity?






37. Is used to detect Abs in a patient?






38. What is the signal to open the voltage - gated transmembrane potassium channels?






39. What bonds are broken by endonucleases?

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40. Are the following parameters associated with an obstructive or restrictive lung disorder: decreased FEV1 - FVC - peak flow - and FEV1/FVC; increased TLC - FRC - and RV?






41. The ophthalmic artery is a branch of what vessel?






42. Name the ventricular muscle membrane channel: x Closed at rest; depolarization causes channels to open slowly






43. What virus is associated with both nasopharyngeal carcinoma and Burkitt lymphoma?






44. 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?






45. Can incidence - prevalence - and cause and effect be assessed in x Cross - sectional studies?






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






47. What primary acid - base disturbance is caused by a loss in fixed acid forcing the reaction to shift to the right - thereby increasing HCO3- levels?






48. Name the RNA subtype based on the following: x RNA molecules with enzymatic activity






49. At what vertebral level does the common carotid artery bifurcate?






50. What diagnosis ensues from finding well - demarcated erythematous plaques with silvery scales on the knees - elbows - and scalp along with nail bed pitting and discoloration?