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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 relationship between ventilation and PCO2 levels?






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






3. How many ATPs per glucose are generated in glycolysis?






4. Name the most common type or cause - Hematologic cause of papillary necrosis






5. What family do the following viruses belong to? - Ebola






6. Name the lung measurement based on the following descriptions: x Additional volume that can be expired after normal expiration






7. What two classes of drugs can cause schizoid behavior?






8. What ovarian carcinoma is characterized by psammoma bodies?






9. Name the compartment of the mediastinum associated with the following thoracic structures: Thymus






10. All spore formers are...






11. What AR disease involves a decreased amount of sphingomyelinase - massive organomegaly - zebra bodies - and foamy histiocytes and is associated with chromosome 11p?






12. What are the three main components of amyloid?






13. Cannot be diagnosed until puberty.






14. What type of foods should patients taking MAOIs avoid? Why?






15. Based on operant conditioning - What type of reinforcement is described when x Removing a stimulus stops a behavior?






16. What is the major pulmonary side effect of






17. What statistical test - using nominal data only - checks whether two variables are independent events?






18. Name the compartment of the lower extremity and the nerve based on its movements - Adduct the thigh and flex the hip






19. What enveloped RNA retrovirus infects CD4 T cells and uses the enzyme reverse transcriptase?






20. Name the most common cause - A cold in the winter and summer






21. Name the antidote - Iron






22. Name the RNA subtype based on the following: x Carries AA to the ribosome for protein synthesis






23. What is the triad of fat embolism?






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






25. From the fourth month of fetal life to term - what secretes the progesterone and estrogen to maintains the uterus?






26. Which medication requires an acidic gastric pH for activation to form a protective gel - like coating over ulcers and GI epithelium?






27. What are the two most common chains of the TCR?






28. What is the MCC of inherited mental retardation?






29. If inserting a needle to perform a pleural tap or insertion of a chest tube - do you use the inferior or the superior border of a rib as your landmark? Why?






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






31. What area of the nephron is sensitive to the effects of ADH?






32. What is the term for an inhibited female orgasm?






33. What is the most common primary diagnosis resulting in an office visit for males? For females?






34. What family do the following viruses belong to? - Rabies






35. What large - diameter vessel has the smallest cross - sectional area in systemic circulation?






36. What is the name of the T cell - rich area of the lymph node?






37. Name the stages of sleep with these EEG patterns: x Sleep spindles - K- complexes






38. What segment of the small intestine is associated with Brunner's glands?






39. Does light or darkness regulate the pineal gland?






40. What CNS developmental abnormality is associated with 90% of syringomyelia?






41. What syndrome arises from mutation in the fibrillin gene (FBN1) on chromosome 15q21?






42. Which muscles of the eye are under parasympathetic control?






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






44. What percentage of children born to HIV- positive mothers will test positive for HIV at birth?






45. In which quadrant is breast cancer most commonly found?






46. When a drug is administered orally and enters into portal circulation - it undergoes hepatic metabolism. What is the name of this effect?






47. What pneumoconiosis is associated with exposure to the following occupations or materials? - Miners - metal grinders - and sandblasters

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48. What organelle synthesizes proteins that are intended to stay within the cell?






49. What vascular injury may result from a supracondylar fracture of the femur?






50. What is the most common one? - Malignancy of the female genital tract