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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. Name the insulin preparation based on the peak effect and duration of action - Peak - 8 to 12 hours; duration - 18 to 24 hours






2. What naturally occurring substances mimic the effects of opioids?






3. What type of collagen is associated with the basement membrane?






4. What has occurred to the renal arterioles based on the following changes in the GFR - RPF - FF - and glomerular capillary pressure? - GFR ? - RPF ? - FF ? - capillary pressure ?






5. Can committed mentally ill patients refuse medical treatment?






6. A marfanoid patient presents with tearing retrosternal chest pain radiating to her back. What is your first diagnosis?






7. What aspects of sleep are affected during benzodiazepine use?






8. Do the following structures pick up stain from hematoxylin or eosin? - Calcium






9. Where is tropocollagen aggregated to form a collagen fibril?






10. What five pathways use SAM (S- adenosylmethionine) as the methyl donor?






11. Are resistant to the effects of aminoglycosides.






12. Name the antidote - Carbon monoxide (CO)






13. Name the most common type or cause - Urinary tract obstruction






14. What thyroid carcinoma secretes calcitonin and arises from the parafollicular C cells?






15. What drug is given transdermally for chronic pain but can cause chest wall rigidity if given IV?






16. What competitive estrogen receptor antagonist is used in the treatment of breast cancer?






17. Which protozoal parasitic vaginal infection produces a positive whiff test with KOH staining?






18. To What does failure to resolve separation anxiety lead?






19. From What aortic arch are the following structures derived?






20. What is the most common one? - Germ cell tumor in boys






21. What antiviral agent for ganciclovir - resistant infections has limited utility because of its nephrotoxic side effect?






22. What enzyme of pyrimidine synthesis is inhibited by the following? - 5- FU






23. What are the two side effects of opioids to which the user will not develop tolerance?






24. What three cephalosporins have good penetration against Bacteroides fragilis?






25. Name the cancer associated with the following oncogenes. (Some may have more than one answer) x hst -1 and int -2






26. What two Ags must be positive for a patient to have chronic active hepatitis?






27. What eukaryotic translation enzyme is associated with the following: x Initiation






28. Is a cause of asthma.






29. What papillae are touch receptors on the tongue and send their sensations via CN V3 (mandibular division)?






30. Name the compartment of the lower extremity and the nerve based on its movements - Flex the hip and extend the knee






31. What AA is a precursor of the following substances? - NAD






32. Which trematode is associated with bladder carcinoma in Egypt and Africa?






33. What bacterium is characterized by large boxcar - shaped gram - positive rods and is spore - forming - aerobic - and associated with cutaneous infections and woolsorter's disease?






34. What T cell deficiency syndrome is associated with facial anomalies - hypoparathyroidism - thymic hypoplasia - and recurrent viral and fungal infections?






35. Which of the following Enterobacteriaceae family members






36. What virus lies dormant in the x Dorsal root ganglia?






37. What urease - positive non - lactose - fermenting gram - negative rod with swarming - type motility is associated with staghorn renal calculi?






38. What is the site of action of the following? - K+- sparing diuretics






39. Where does CHO digestion begin?






40. Which is the conditioned response - the conditioned stimulus - the unconditioned response - the unconditioned stimulus in this case? A patient has blood withdrawn and faints. The next time she goes to have blood taken - she faints at the sight of the






41. What thalamic relay nucleus do the mammillary bodies project to?






42. Causes of avascular necrosis of bone.






43. What organism is associated with megaloblastic anemia?






44. What is the term for the amount of blood in the ventricle after maximal contraction?






45. Name the product or products of arachidonic acid: x Chemotactic for neutrophils






46. What do low levels of Ca2+ and PO4- along with neuromuscular irritability indicate?






47. What condition results in the following CSF results? - Opening pressure 100 mm H2O; 120 WBCs (90% lymphocytes); normal glucose levels; protein 17






48. What capsular serotype is associated with Escherichia coli - induced meningitis?






49. What type of correlation is defined as x One variable that diminishes in the presence of the other?






50. What generate anterograde transport of information in a neuron?