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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 MCC of inherited mental retardation?






2. What is the only DNA virus that has the reverse transcriptase enzyme?






3. How many caf






4. Name the end product or products: x Fatty acid oxidation






5. Why should opioid analgesics be avoided for patients with head trauma?






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






7. Are bactericidal.






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






9. What does failure of PaO2 to increase with supplemental O2 indicate?






10. What oral antifungal agent is used to treat dermatophyte infections by disrupting microtubule structure and depositing keratin?






11. What cell transports IgA - is secreted by plasma cells - and is in Peyer's patches to the gastrointestinal lumen?






12. What component of the ETC is inhibited by the following? - Oligomycin






13. What bactericidal agents are resistant to Beta- lactamases and are used to treat in - hospital life - threatening infections?






14. Name the area of the cerebral cortex with the function described: x Initiation and control of movements






15. What lysosomal enzyme is deficient in x Gaucher's disease?






16. What is the major pulmonary side effect of






17. What pancreatic islet cell tumor is associated with MEN I syndrome?






18. A urethral swab of a patient shows gram - negative diplococci in PMNs; what organism do you diagnose?






19. T cells can recognize - bind - and internalize...






20. What area of the hypothalamus is responsible for recognizing an increase in body temperature and mediates the response to dissipate heat?






21. What are the three major functions of secretory IgA?






22. What disorder causes joint stiffness that worsens with repetitive motion - crepitus - effusions - and swelling and commonly affects the knees - hips - and spine?






23. What hormone disorder is characterized by the following abnormalities in sex steroids? - LH? - and FSH?? - Sex steroids - LH - FSH






24. What vitamin is a component of the enzymes fatty acid synthase and acyl CoA?






25. What is the term for repetitive actions blocking recurring bad thoughts?






26. What statistical test checks to see whether the groups are different by comparing the means of two groups from a single nominal variable?






27. After fertilization - what cells of the corpus luteum x Secrete estrogen?






28. What is the triad of fat embolism?






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






30. What happens to the lung if the intrapleural pressure exceeds lung recoil?






31. What would be the result if an Ab were cleaved with papain?






32. What attaches the cusps of the valves to the papillary muscles in the heart?






33. What are the four muscles of mastication?






34. What malignant bone tumor is characterized by Codman triangle (periosteal elevation) on radiograph?






35. What deep cerebellar nuclei receive Purkinje cell projections in x The vermis?






36. What type of scale is graded into equal increments - showing not only any difference but how much?






37. At the base of the lung - What is the baseline intrapleural pressure - and what force does it exert on the alveoli?






38. Which virus is treated with the monoclonal antibody palivizumab?






39. Name the macrophages by location: x Lungs






40. What enzyme catalyzes the rate - limiting step in gluconeogenesis?






41. What two viruses are associated with Reye's syndrome?






42. Do the following structures pick up stain from hematoxylin or eosin? - Collagen






43. Marriage ______ a child less than 17 years old.






44. What is the effect of insulin on protein storage?






45. What myeloid disorder is characterized by increased hematocrit - blood viscosity - basophils - and eosinophils; intense pruritus; and gastric ulcers due to histamine release from basophils - increased LAP - and plethora?






46. What preganglionic sympathetic fibers are responsible for innervating the foregut and the midgut?






47. What is the most common one? - Renal cell cancer type






48. What determines the rate of a reaction?






49. What pathway of the coagulation cascade is activated when it is in contact with foreign surfaces?






50. What hormone is activated in adipose tissue when blood glucose levels decrease?