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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 for cestode - encysted larvae found in intermediate hosts?






2. What Ig prevents bacterial adherence to mucosal surfaces?






3. 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?






4. What is the term for gastric ulcers associated with increased intracranial pressure?

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5. Name the most common type or cause - Infection in a patient on a ventilator






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






7. What lysosomal enzyme is deficient in x Tay- Sachs disease?






8. What subtype of schizophrenia is characterized by x Stuporous mute echopraxia and automatic obedience - waxy flexibility with rigidity of posture?






9. What results when the maxillary prominence fails to fuse with the medial nasal prominence?






10. What vessels in the systemic circulation have the greatest and slowest velocity?






11. What is the term for any stimulus that increases the probability of a response happening?






12. Name the most common type or cause - Nonorganic pneumoconiosis






13. What chronic systemic inflammatory disease commonly seen in women aged 20 to 50 is a progressive - symmetric arthritis affecting the hands - wrists - knees - and ankles that improves with increased activity?






14. Name the following descriptions associated with bacterial endocarditis: x Painless hyperemic lesions on the palms and soles






15. What area of the female reproductive tract is lined by stratified squamous epithelium rich in |glycogen?






16. At What age do children begin to understand the irreversibility of death?






17. The faster the ___________ - the smaller the time of maximum concentration (Tmax) and the maximum concentration (Cmax).






18. What AD disease is associated with chromosome 4p; does not present until the person is in his or her 30s; and involves atrophy of the caudate nucleus - dilatation of the lateral and third ventricles - and signs of extrapyramidal lesions?






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






20. What enzyme of the purine salvage pathway is deficient in the following? - Selective T- cell immunodeficiency






21. What is the term for a deficiency or absence of sexual fantasies or desires?






22. What chronic liver disease has a beaded appearance of the bile ducts on cholangiogram?






23. What is the most common one? - Tumor in men aged 15 to 35






24. What are the three branches of the celiac trunk?






25. What is the binding site for RNA polymerase?






26. Ensures emancipation.






27. What is the region of an axon where no myelin is found?






28. What type of fiber or fibers are carried in (answer motor - sensory - or both) x Ventral root?






29. What is the major difference between the veins in the face and the veins in the rest of the body?






30. What vitamin deficiency produces angular stomatitis - glossitis - and cheilosis?






31. Is splenomegaly more commonly associated with intravascular or extravascular hemolysis?






32. Where is ADH synthesized?






33. What is the longest and most convoluted segment of the nephron?






34. During puberty - What is the main drive for the increased GH secretion?






35. Name three opsonins.






36. What vascular tumor associated with von Hippel - Lindau syndrome involves the cerebellum - brainstem - spinal cord - and retina?






37. What enzyme is inhibited by sulfonamides?






38. Name the B- cell CD marker: x Receptor for EBV






39. Name the area of the cerebral cortex with the function described: x Important for REM sleep; origin of NE pathway






40. What is the most common one? - Primary tumor metastasis to the bone






41. What are the two factors that affect alveolar PCO2 levels?






42. Name the compartment of the mediastinum associated with the following thoracic structures: SVC






43. What is the drug of choice for early Parkinson's disease?






44. What level of mental retardation is characterized by x Can work in sheltered workshops and learn simple tasks but need supervision?






45. What is the term for transverse bands on the fingernails seen in patients with chronic arsenic poisoning?






46. What organ must metastasize for carcinoid heart disease to occur?






47. What is the term to describe inability to recall the past and possible assumption of a completely new identity?






48. Which macrolide is used in the treatment of gastroparesis?






49. What adrenal enzyme deficiency results in hypertension - hypernatremia - increased ECF volume - and decreased adrenal androgen production?






50. With an increase in arterial systolic pressure - what happens to x Stroke volume?