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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. Are associated with poststreptococcal GN.






2. If the pH is more acidic than the pI - does the protein carry a net positive or net negative charge?






3. What modified smooth muscle cells of the kidney monitor BP in the afferent arteriole?






4. What linkage of complex CHOs does pancreatic amylase hydrolyze? What three complexes are formed?






5. Where is the lesion that produces these symptoms when a patient is asked to look to the left? Neither eye can look left with a slow drift to the right






6. What is the most important determinant of drug potency?






7. How long is the transit time through the large intestine?






8. What complement factor deficiency leads to x Recurrent gonococcal infections?






9. Name the antidote - AChE inhibitors






10. To What does failure to resolve separation anxiety lead?






11. What enzyme is blocked by hydroxyurea?






12. What is the term for the number of Ag - binding sites on an Ig?






13. What happens to affinity if you increase Km?






14. Are white rami preganglionic or postganglionic fibers?






15. Which M- protein strain of Streptococcus pyogenes is associated with acute glomerulonephritis?






16. What protein - losing enteropathy has grossly enlarged rugal fold in the body and fundus of the stomach in middle - aged males - resulting in decreased acid production and an increased risk of gastric cancer?






17. What phase of the cell cycle are the following antineoplastic agents specific for? - Vincristine






18. Which major cell type is found in the red pulp of the spleen?






19. Which CNs act as the sensory and motor components of the gag reflex?






20. What frontal lobe cortex is associated with organizing and planning the intellectual and emotional aspect of behavior?






21. Which centrally acting a2- adrenergic agonist is used in the treatment protocol of opioid withdrawal?






22. What embryonic structure forms the adult female structures? - Labia minora






23. What two AAs have a pKa of 10?






24. What is the rate - limiting step in the synthetic pathway of NE at the adrenergic nerve terminal?






25. If the occurrence of one event had nothing to do with the occurrence of another event - How do you combine their probabilities?






26. What enzyme catalyzes the rate - limiting step in pyrimidine synthesis?






27. What is the most common one? - Cancer of the esophagus in the world






28. What aerobic branching rod that is gram positive and partially acid - fast is associated with cavitary bronchopulmonary disease in immunosuppressed patients?






29. What negative sense RNA virus is associated with cough - coryza - and conjunctivitis with photophobia?






30. What phase of the cell cycle are the following antineoplastic agents specific for? - Dacarbazine






31. How is the eye affected by use of opioids?






32. What Ig activates the complement cascade most efficiently?






33. Name the GLUT transporter based on the following: x Found in liver and pancreatic Beta- cells






34. How many days prior to ovulation does estradiol peak in the menstrual cycle?






35. What paraphilia is defined as x Combining sex with defecation?






36. What are the five pieces of information considered necessary for fully informed consent?

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37. What Enterobacteriaceae are prone to produce osteomyelitis in sickle cell patients?






38. What is the only vein in the body with a high O2 content?






39. What test is done to diagnose CGD?






40. In the water deprivation test - does a patient with reduced urine flow have primary polydipsia or diabetes insipidus?






41. What are the long microvilli in the inner ear and male reproductive tract called?






42. What form of renal tubular reabsorption is characterized by low back leaks - high affinity of a substance - and easy saturation? It is surmised that the entire filtered load is reabsorbed until the carriers are saturated - and then the rest is excret






43. What complement factor or factors are associated with x Chemotaxis?






44. Name the aphasia based on these characteristics: x Both Broca's and Wernicke's areas damaged by lesion in the presylvian speech area; trouble repeating statements; poor comprehension with telegraphic speech






45. What are the most common causes of osteomyelitis x Overall?






46. Where in the spinal cord are the presynaptic opioid receptors?






47. What organism is associated with the following types of diarrhea? Diarrhea associated with raw or undercooked shellfish






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






49. What testicular tumor of infancy is characterized by elevated - fetoprotein levels and Schiller - Duval bodies?






50. Why is the clearance of creatinine always slightly greater than the clearance of inulin and GFR?







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