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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. Familial hypercholesteremia is due to a mutation in the LDL receptor gene. What chromosome carries it?






2. What form of depression is due to abnormal metabolism of melatonin?






3. What IL is essential for lymphoid cell development?






4. Name the antimicrobial agent whose major side effect is listed - Altered folate metabolism






5. Name the primary vesicle the following structures are derived from (proencephalon - mesencephalon - or rhombencephalon) - Myelencephalon






6. What AA is a precursor of the following substances? - Histamine






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






8. What component of the ETC is inhibited by the following? - Antimycin A






9. DNA replication occurs During what phase of the cell cycle?






10. Name the structure that enters or exits the following foramina: x Optic canal






11. What is the term for the first 3 to 5 days of the female reproductive cycle?






12. What segments of the lumbosacral plexus form the following nerves? - Femoral nerve






13. What is the term to describe basophils that have left the bloodstream and entered a tissue?






14. What malignant neoplasm of the bone is associated with Homer - Wright pseudorosettes; onion skinning of the periosteum on radiographs of the femur - pelvis - and tibia; and chromosome 11;22 translocation?

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15. Does the left or right vagus nerve innervate the SA node?






16. Name the most common type or cause - Cushing syndrome






17. What type of GN - associated with celiac disease and dermatitis herpetiformis - has mesangial deposits of IgA - C3 - properdin - IgG - and IgM?






18. What is the drug of choice for steroid - induced osteoporosis?






19. What fungus is characterized by hypopigmented spots on the thorax - spaghetti - and - meatball KOH staining - and pityriasis or tinea versicolor?






20. What is the term to describe jumping from one topic to the next without any connection?






21. Have catalase.






22. What is the most common one? - Cardiac anomaly in children






23. Name the most common type or cause - Breast lump in females






24. What aneurysm of the circle of Willis is associated with polycystic kidney disease?






25. What muscle type is characterized by low ATPase activity - aerobic metabolism - myoglobin - association with endurance - and small muscle mass?






26. Where does CHO digestion begin?






27. What is the name of the tumor when gastric carcinoma spreads to the ovaries?






28. At the D2A receptor have the capacity to induce pseudoparkinsonism.






29. 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?






30. After fertilization - what cells of the corpus luteum x Secrete progesterone?






31. What is the size of a positive PPD test for the following? (Reactive) x Recent immigrant from India






32. What are the eight liver - specific enzymes?






33. What type II hypersensitivity disorder is defined as x Autoantibodies directed against RBC Ag I?






34. What transports iron in the blood?






35. What disorder is characterized by an alternating pattern of depressed mood with periods of hypomania for more than 2 years?






36. What segments of the lumbosacral plexus form the following nerves? - Obturator nerve






37. Name the AD disease associated with chromosome 15 in which the patient has long extremities - lax joints - pigeon chest - and posterior mitral leaflet prolapse and is prone to developing dissecting aortic aneurysm.






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






39. What are the five terminal branches of the facial nerve?






40. What phase of the cell cycle are the following antineoplastic agents specific for? - Nitrosoureas






41. By What age should children be able to draw the following figures? - Cross






42. What drug is used to differentiate a cholinergic crisis from myasthenia gravis?






43. What syndrome is associated with the following brainstem lesions? - Occlusion of the PICA - resulting in ipsilateral limb ataxia - ipsilateral facial pain and temperature loss - contralateral pain and body temperature loss - ipsilateral Horner's synd

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44. What fissure of the cerebral cortex runs perpendicular to the lateral fissure and separates the frontal and the parietal lobes?






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






46. What is the most common one? - Type of ASD






47. What vessel is lacerated in an epidural hematoma?






48. What virus is associated with body cavity large B- cell lymphomas?






49. Name the most common type or cause - Meningitis in renal transplantation patients






50. What chromosome is mutant in patients with cystic fibrosis?