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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 DOC for the following protozoal infections? - Pneumocystis carinii pneumonia






2. Which benzodiazepine is most commonly used IV in conscious sedation protocols?






3. What viral infection is known to cause intracerebral calcifications?






4. What is the size of the prokaryotic ribosome?






5. Which class of antiarrhythmics blocks sodium channels?






6. Name the type of necrosis - Soft - friable - cottage - cheese appearing; characteristically seen in TB






7. Name the bony articulations of the following sites. Be specific. Elbow






8. What urinary metabolite is increased in patients with carcinoid syndrome?






9. The elimination of the unfertilized egg. In females - meiosis II is incomplete unless fertilization takes place.






10. What statistical method do you use when analyzing x Case control studies?






11. Name the thalamic nucleus based on its input and output - Input from globus pallidus and substantia nigra; output to primary motor cortex






12. What oral hypoglycemic agent stimulates pancreatic Beta- cell release of insulin and is given just prior to meals because of its short half - life?






13. What is the most common one? - Kidney stone type






14. Do the following structures pick up stain from hematoxylin or eosin? - Bacteria






15. What IL down - regulates cell mediated immunity?






16. What is the degree to which two measures are related? Does it imply causation?






17. Which of the following characteristics accurately describe fungi - bacteria - viruses - or parasites? - Eukaryotic cell; 3 to 10 microns; 80S ribosomes; chitinous cell wall; ergosterol in cell membrane; replicate via cytokinesis with mitosis and meio






18. What muscle of the middle ear is innervated by CN VII?






19. What is the most common one? - Malignant tumor in the bone of teenagers






20. What muscles insert in or on the intertubercular groove of the humerus?

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21. What peripheral chemoreceptor receives the most blood per gram of weight in the body?






22. What type of hemostasis in an intravascular space consists of fibrin - platelets - RBCs - and WBCs?






23. What purine base is contained in inosine monophosphate?






24. Can incidence - prevalence - and cause and effect be assessed in x Cross - sectional studies?






25. What histone binds two nucleosomes together?






26. HIV's capsid - core nucleocapsid - and matrix proteins are products of what structural gene?






27. Is suicidal ideation a component of normal grief?






28. What is the only glycosaminoglycan (GAG) that binds to the linker portion of the proteoglycan?






29. Name the most common type or cause - Acute bacterial endocarditis






30. If the radius of a vessel doubles - what happens to resistance?






31. Acts as the vertebral body of C1 allowing lateral rotation of the head. The first cervical vertebra has no vertebral body.






32. What are the primary neurotransmitters at the following sites? - Postganglionic sympathetic neurons






33. What pancreatic islet cell secretes glucagons?






34. In what disease do you see horseshoe kidneys - rockerbottom feet - low - set ears - micrognathia - and mental retardation?






35. The gallbladder functions to...






36. With an increase in arterial systolic pressure - what happens to x Vessel compliance?






37. What complement factor deficiency leads to x Hereditary angioedema?






38. Name the antidote - Mercury






39. What ethnic group has the highest adolescent suicide rate?






40. What type of hypersensitivity is an Ab - mediated response against our own cells - receptors - or membranes via IgG or IgM?






41. What is the term for the total volume of air moved in and out of the respiratory system per minute?






42. What are the first signs of overdose from phenobarbitals?






43. Ventral rami of what cervical nerves constitute the phrenic nerve?






44. What form of nephritic syndrome is associated with celiac sprue and Henoch - Sch






45. What group of eukaryotic regulatory proteins has a major factor in controlling the gene expression embryonically?






46. If a peripheral blood smear shows schistocytes - reticulocytes - and thrombocytopenia - is it more commonly seen in patients with ITP or TTP?






47. What type of cell can never leave the lymph node?






48. What stage of sleep is associated with somnambulism?






49. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Hematopoietic cells






50. The blood stored in the systemic veins and the pulmonary circuit are considered part of the...