Test your basic knowledge |

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. Name the valve abnormality based on the following criteria: x Diastolic murmur - increased right ventricular pressure - left atrial pressure - and atrial to ventricular pressure gradient; decreased left ventricular filling pressure






2. What viral infection in patients with sickle cell anemia results in aplastic crisis?






3. If a mother delivers a Rho - positive baby - she should receive...






4. What is the primary screening test used to detect HIV- infected individuals? Confirmatory test?






5. What structure of the knee is described thus? - C- shaped shock absorber; aids in attachment of the tibia to the femur via the medial collateral ligament






6. What muscle of the middle ear is innervated by CN VII?






7. What phase of Interphase is haploid (N)?






8. What autoimmune liver disease is characterized by affecting a middle - aged woman with jaundice - pruritus - fatigue - xanthomas - increased direct bilirubin levels - and antimitochondrial Abs?






9. What two Beta2- agonists are used to produce bronchodilation?






10. What is the effect of LH on the production of adrenal androgens?






11. What disease caused by decompression sickness leads to multiple foci of ischemic necrosis that affect the head of the femur - humerus - and tibia?






12. Name the laryngeal muscle described by the following: x Pulls the arytenoids cartilages closer to the thyroid - relaxing the vocal ligaments and thereby decreasing the pitch






13. What form of bilirubin can cross the blood - brain barrier?






14. What statistical method do you use when analyzing x Cross - sectional studies?






15. What is the only organ in the body supplied by preganglionic sympathetic fibers?






16. What aerobic branching rod that is gram positive and partially acid - fast is associated with cavitary bronchopulmonary disease in immunosuppressed patients?






17. Which two tetracyclines have the highest plasma binding?






18. What paraphilia is defined as x Deriving sexual pleasure from other peoples' pain?






19. What artery turns into the dorsalis pedis when it crosses the extensor retinaculum?






20. As what compound do the carbons for fatty acid synthesis leave the mitochondria?






21. Is encapsulated.






22. What is the most common one? - Esophageal carcinoma






23. What genetic defect is characterized by coarse facial features - gingival hyperplasia - macroglossia - psychomotor and growth retardation - club foot - claw hand - cardiorespiratory failure - and death in the first decade of life?






24. What is the main factor determining GFR?






25. What restriction endonuclease site is destroyed in sickle Beta- globin allele?






26. What is the only neuroleptic agent that does not cause hyperprolactinemia?






27. What glycoprotein allows platelets to adhere to each other through the use of fibrinogen?






28. What urinary metabolite is elevated in pheochromocytoma?






29. Name the antidote - Iron






30. What phase of the cell cycle are the following antineoplastic agents specific for? - Cytarabine






31. What is the DOC for the following protozoal infections? - Leishmaniasis






32. What mineral is an important component of the enzyme xanthine oxidase?






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






34. What AR syndrome is due to a deficiency of glycoprotein Ib - resulting in a defect in platelet adhesion?






35. What assay is used to identify MHC class I molecules?






36. What does hepatitis D virus need from hepatitis B virus to be infective?






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






38. What nucleus supplies the preganglionic parasympathetic fibers to the ciliary ganglion?






39. What Brodmann area is associated with x Premotor cortex?






40. Name the type of mutation: x New codon specifies for a stop codon






41. What thyroid abnormality has the following? - TRH decreased - TSH decreased - T4 increased






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






43. Outburst to cover up true feelings (emotion is covered - not redirected).






44. What ocular muscle x Depresses and adducts the eyeball?






45. What is the most energy- demanding phase of the cardiac cycle?






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






47. How are flow through the loop of Henle and concentration of urine related?






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






49. What somatoform disorder is described as x Having a F:M ratio of 20:1 - onset before age 30 - and having 4 pains (2 gastrointestinal - 1 sexual - 1 neurologic)?






50. What viruses are associated with Cowdry type A intranuclear inclusions?