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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 nucleus of the hypothalamus receives visual input from the retina and helps set the circadian rhythm?






2. Are the following major or minor Jones criteria of rheumatic fever? - Fever






3. Name the most common type - Phobia






4. Name the most common type or cause - Acute renal failure in the United States






5. What is the drug of choice for hypertensive patients with a decreased renal function?






6. What is the ratio of T4:T3 secretion from the thyroid gland?






7. What adrenal enzyme deficiency results in hypertension - hypernatremia - and virilization?






8. Name the antidote - Heparin






9. Name the product or products of arachidonic acid: x Vasodilation and inhibition of platelet aggregation produced by vascular endothelium






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






11. What protein carries free fatty acids to the liver?






12. In what layer of the epidermis is melanin transferred from melanocytes to keratinocytes?






13. What form of bilirubin can cross the blood - brain barrier?






14. What are the three microscopic pathologic changes seen in Alzheimer's disease?






15. Name the phase of the eukaryotic cell cycle: x Period of cellular growth (translation and transcription) before DNA synthesis






16. What enzyme of the TCA cycle catalyzes the production of the following: x GTP






17. What antidepressant - which recently was approved for general anxiety disorder - inhibits the reuptake of NE and 5- HT?






18. What is the bioactive form of thyroid hormone?






19. What hormone controls relaxation of the lower esophageal sphincter during swallowing?






20. What is the name for the following RBC indices? - Average volume of a RBC






21. Name the DNA virus: x Partially dsDNA circular; enveloped; virion - associated polymerases; has RNA intermediate; replicates in the nucleus






22. RBC casts in the urine






23. Name the thalamic nucleus based on its input and output - Input from the optic tract; output projects to the primary visual cortex of the occipital lobe






24. What CNs are affected if there is a lesion in x The midbrain?






25. What branches of CN X are the sensory and motor components of the cough reflex? Be specific.






26. What cell type of the epidermis originates from the neural crest?






27. What type of jaundice is seen in Dubin - Johnson syndrome?






28. In regard to motor development during infancy - choose the motor response that happens first - Proximal or distal progression






29. What embryonic structure forms the adult male structure? - Epididymis - ductus deferens - seminal vesicle - and ejaculatory duct






30. What embryonic structure forms the adult male structure? - Corpus cavernosus - corpus spongiosum - and glans and body of the penis






31. What organelles make ATP - have their own dsDNA - and can synthesize protein?






32. What small gram - positive - non - spore - forming rod is a facultative intracellular parasite that grows in the cold and is associated with unpasteurized milk products?






33. What component of the inner ear x Contains endolymph and responds to head turning and movement?






34. As what compound do the carbons for fatty acid synthesis leave the mitochondria?






35. What enzyme catalyzes the rate - limiting step in cholesterol metabolism?






36. What MHC class acts to remove foreign Ags from the body?






37. What enzyme is deficient in selective T cell immunodeficiency?






38. What size ribosomes do fungi have?






39. What nerve roots constitute the cervical plexus?






40. What is the most common one? Esophageal cancer in the United States






41. Name the antimicrobial agent whose major side effect is listed - CN VIII damage (vestibulotoxic)






42. What adrenal enzyme deficiency results in hypertension - hypernatremia - increased ECF volume - and decreased adrenal androgen production?






43. What are the five penicillinase - resistant penicillins?






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






45. What determines the rate of a reaction?






46. Is marital satisfaction higher for couples with or without children?

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






48. Which hepatitis B Ag correlates with infectivity and viral proliferation?






49. What is the term for the heart's inability to maintain perfusion and meet the metabolic demands of tissues and organs?






50. Name the eukaryotic DNA polymerase based on the following information: x Synthesizes the leading strand during replication