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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. Russell bodies






2. What are the three functions of surfactant?






3. What gluconeogenic mitochondrial enzyme requires biotin?






4. Name the compartment of the mediastinum associated with the following thoracic structures: IVC






5. Would a G- C or an A- T rich dsDNA sequence have a higher melting point? Why?






6. What phase of the cell cycle are the following antineoplastic agents specific for? - Hydroxyurea






7. Projectile nonbilious vomiting and a small knot at the right costal margin (olive sign) are hallmarks of What embryonic disorder?






8. Renal epithelial casts in the urine






9. What is the label given to an individual whose IQ is x 110 to 119






10. What are the two most important features in the diagnosis of malaria?






11. What is the name of the exotoxin Shigella dysenteriae produces - which interferes with the 60S ribosomal subunit and results in eukaryotic protein synthesis inhibition?






12. How far below ideal body weight are patients with anorexia nervosa?






13. What parasite is associated with squamous cell carcinoma of the urinary bladder?






14. What are the most common causes of osteomyelitis x In patients with sickle cell disease?






15. What three drugs are associated with SLE- like syndrome in slow acetylators?






16. What complex is needed for propionyl CoA carboxylase?






17. What is the leading cause of school dropout?






18. Name these cluster A personality disorders: x Socially withdrawn - seen as eccentric but happy to be alone






19. Name the three methods of vasodilation via the sympathetic nervous system.






20. What muscle of the middle ear is innervated by the mandibular division of CN V?






21. What cell in the heart has the highest rate of automaticity?






22. What virus lies dormant in the x Trigeminal ganglia?






23. What pathophysiologic disorder is characterized by the following changes in cortisol and ACTH? - Cortisol decreased - ACTH decreased






24. Name the RNA subtype based on the following: x Found only in the nucleus of eukaryotic cells and are precursors of mRNA






25. What is the DOC for severe infections with Sporothrix - Mucor - Histoplasma - Cryptococcus - Candida - and Aspergillus?






26. Where are the preganglionic neuron cell bodies - the CNS or the PNS?






27. What component of an ECG is associated with the following? - Atrial depolarization






28. What type of chromatin is transcriptionally inactive?






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






30. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Chromium and nickel






31. What structure or structures cross the diaphragm at x T8 level?






32. What phase of the cell cycle are the following antineoplastic agents specific for? - Dacarbazine






33. What is the pancreatic action of CCK?






34. Name the macrophage based on its location: x Lung macrophages






35. What part of the heart forms x Diaphragmatic wall?






36. What is the term for air in the pleural space?






37. What is the only DNA virus that is not icosahedral?






38. What is the name of the 12- step program believed to be the most successful for the treatment of alcohol abuse?






39. Which antihyperlipidemic agent would you not prescribe for a patient with a history of gout or PUD?






40. What is the vector for Leishmania infections?






41. What protein prevents ssDNA from reannealing during DNA replication?






42. What two substances stimulate Sertoli cells?






43. What Freudian psyche component is described as x Reality - rationality - language basis?






44. What is the term to describe the increase in organ size due to the increase in cell size and function?






45. Which CHO is independently absorbed from the small intestine?






46. Name the valve abnormality based on the following criteria: x Back - filling into the left atrium during systole; increased v - wave - preload - left atrial volume - and left ventricular filling






47. What blotting technique uses the following for analysis? - DNA






48. What is the most common form of dementia?

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49. What renal side effect is commonly seen in patients taking lithium?






50. A tropical fish enthusiast has granulomatous lesions and cellulitis; What is the most likely offending organism?







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