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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. Which laxative is used in the treatment of hepatic encephalopathy ?






2. Is heparin contraindicated in pregnancy?






3. What are the four ways to increase TPR?






4. What is the MCC of the following meningitides? - In neonates to 3 months of age






5. Is an excitatory neurotransmitter in the CNS.






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






7. If you order a V/Q scan for suspected pulmonary emboli - is the filling defect seen on the ventilation or perfusion side?






8. What condition is manifested by bilateral sarcoidosis of the parotid glands - submaxillary gland - and submandibular gland with posterior uveal tract involvement?






9. What AA is a precursor of the following substances? - Creatine






10. What is the most common one? - Malignant tumor in women






11. What is the only dsRNA virus?






12. What syndrome is rheumatoid arthritis with pneumoconiosis?






13. What type of muscle is characterized by no myoglobin - anaerobic glycolysis - high ATPase activity - and large muscle mass?






14. What three organs can be affected by Trypanosoma cruzi?






15. What part of the ANS (i.e. - PNS or CNS) controls the constriction of the pupil in response to light?






16. What are the longest - acting and shortest - acting benzodiazepines?






17. In a parallel circuit - what happens to resistance when a resistor is added in parallel






18. What enzyme is inhibited by sulfonamides?






19. What substrate is built up in Niemann - Pick disease?






20. What is the most common one? - Primary malignant tumor in the liver






21. What ocular muscle x Elevates and abducts the eyeball?






22. Increased self - esteem - flight of ideas - decreased sleep - increased libido - weight loss - and erratic behavior are all symptoms of what disorder?






23. What pneumoconiosis is associated with exposure to the following occupations or materials? - Aerospace industry - nuclear reactors






24. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Kidney






25. What AD syndrome involves 1000 or more edematous polyps - most commonly affects the colorectal area - and is associated with chromosome 5q21?






26. What form of penicillin is stable in acid environments?






27. What muscle or muscles are innervated by the following nerves? - Long thoracic nerve






28. What protein catalyzes the formation of the last PDE bond between the Okazaki fragments to produce a continuous strand?






29. What factors are needed for translation in prokaryotes?






30. What is the amount in liters and percent body weight for the following compartments? - ECF






31. To differentiate central from nephrogenic diabetes insipidus - after an injection of ADH - which will show a decreased urine flow?






32. What infection is associated with ring - enhancing lesions seen on computed tomography (CT) of the brain in an HIV- positive individual?






33. A patient can ______ a feeding tube.






34. What is used as an index of cortisol secretion?






35. What three cephalosporins inhibit vitamin K- dependent factors?






36. Name the most common type or cause - Hematuria






37. What syndrome occurs when pelvic inflammatory disease ascends to surround the liver capsule in violin string adhesions?






38. What disease is diagnosed by findings of ANAs and anti - SCL-70 antibodies?






39. What CNs are affected if there is a lesion in x Pontomedullary junction?






40. What AR disorder is seen by age 1 to 2 with recurrent sinopulmonary infections - uncoordinated muscle movements - and dilation of the blood vessels?






41. What is the term for the proportion of a drug that reaches systemic circulation?






42. What is the term for the appearance of the kidney in malignant hypertension (it has petechiae on its surface)?






43. What is the drug of choice for treating Tourette syndrome?






44. What type of correlation is defined as x Two variables with no linear relation to one another?






45. What is the primary screening test used to detect HIV- infected individuals? Confirmatory test?






46. Name the cancer associated with the following oncogenes. (Some may have more than one answer) x abl






47. What is the most common one? - Testicular tumor in infants and children






48. What tract carries the ipsilateral dorsal column fibers from the lower limbs in the spinal cord?






49. Name the associated chromosome - Cri - du - chat






50. What is the pancreatic action of CCK?