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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 a complete aversion to all sexual contact?






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






3. What enzyme is needed to activate the following reactions? - Procarboxypeptidase to carboxypeptidase






4. What muscle is the chief flexor of the hip?






5. What is pumped from the lumen of the ascending loop of Henle to decrease the osmolarity?






6. What is the function of white rami communicantes?






7. What is the term to describe a man who has x Used to be able to achieve an erection but now cannot?






8. Name the end product or products: x Fatty acid synthesis






9. What a2- antagonist is used to treat impotence and postural hypotension?






10. What five factors promote turbulent flow?






11. What metal poisoning produces microcytic anemia with basophilic stippling?






12. Can parents withhold treatment from their children?






13. The fibers of nucleus gracilis and nucleus cuneatus cross at the medullary decussation and ascend contralateral to What thalamic relay nucleus?






14. Inhibits glucose uptake in skeletal muscle.






15. How are lipid solubility and potency related for inhaled anesthetics? How do they affect onset and recovery?






16. How many pairs of spinal nerves are associated with x Cervical vertebrae?






17. What illicit drug can cause amyloidosis and focal segmental glomerulosclerosis in the kidney?






18. From What aortic arch are the following structures derived?






19. What type of saliva is produced under parasympathetic stimulation?






20. Name the cancer associated with the following tumor markers. (Some may have more than one answer.) x CA-19.9 and CEA






21. When attempting to make up sleep - what stage of sleep is recovered?






22. What MAOI does not cause a hypertensive crisis?






23. What is the term for hypoperfusion of an area involving only the inner layers?






24. What artificial sweetener must patients with PKU avoid?






25. What is the term for the ability of a test to measure something consistently?

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






27. Anhedonia - lack of motivation - feelings of worthlessness - decreased sex drive - insomnia - and recurrent thoughts for at least 2 weeks - representing a change from previous level of function - describes what disorder?






28. Name the most common type or cause - Cystitis






29. What is the most common organ involved in amyloidosis?






30. What is the term for conversion of a dsDNA molecule to the base sequence of an ssRNA molecule?






31. ______________ that slow bacterial growth are bactericidal.






32. What is the name of the major chemotactic agent released from x The blood serum? (Hint: it is a complement factor.)






33. Are modified skeletal muscle fibers. They are the sensory component of the stretch reflexes.






34. A 30-year - old woman goes to your office with bilateral multiple breast nodules that vary with menstruation and have cyclical pain and engorgement. What is your diagnosis?






35. Auer rods






36. What area of the limbic system is responsible for attaching emotional significance to a stimulus?






37. What is the vector for Leishmania infections?






38. What prion - associated CNS pathology produces rapidly progressive dementia with myoclonus - involuntary movements - and death within 6 to 12 months?






39. What syndrome is seen in iron - deficient middle - aged women with esophageal webs?






40. With What three enzymes is thiamin pyrophosphate (TPP) associated?






41. What is the MCC of the following endocarditis scenarios? - Post dental work






42. What is found in the R group if the AA is acidic? Basic?






43. What determines the rate of a reaction?






44. What stage of sleep is associated with somnambulism?






45. What enzyme catalyzes the reversible oxidative deamination of glutamate and produces the TCA cycle intermediate a - ketoglutarate?






46. What is the neurotransmitter at the






47. Name the muscle type based on the histological features: x Actin and myosin in sarcomeres; striated; uninuclear; gap junctions; troponin:calcium binding complex; T tubules and SR forming dyadic contacts; voltage - gated calcium channels






48. What chromosome 4 - AD disorder is a degeneration of GABA neurons in the striatum of the indirect pathway of the basal ganglia?

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49. What is the term for the rate measured for a subgroup of a population?






50. What androgen receptor blocker is used in the treatment of prostatic cancer?







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