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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. Name the 10 retroperitoneal organs.






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






3. A suspected dermatophyte infection is stained with KOH. What spore type do you expect to see?






4. What are the genetic variants of a molecule within members of the same species?






5. Is the pH of CSF acidotic - alkalotic - or neutral?






6. Name the thalamic nucleus based on its input and output - Input from the amygdala - prefrontal cortex - and temporal lobe; output to the prefrontal lobe and the cingulated gyrus






7. Name the most common type or cause - Chronic metal poisoning






8. What are the three Beta - lactamase inhibitors?






9. What negative sense RNA virus is associated with parotitis - pancreatitis - and orchitis?






10. Which antihistamine is one of the DOCs for treatment of vertigo?






11. What part of the ANS is affected in the biofeedback model of operant conditioning?






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






13. What five cofactors and coenzymes are required by pyruvate dehydrogenase?






14. Macro - ovalocytes in the peripheral blood smear are formed From what cell in the bone marrow?






15. What disorder is associated with decreased platelet count - prolonged PT and PTT - decreased fibrinogen - and increased fibrin split products (D- dimers)?






16. Can a physician commit a patient?






17. What IL do T cells secrete to induce T- and B- cell division?






18. What drug of choice for ascaris causes neuromuscular blockade of the worm?






19. From what pharyngeal groove is the external auditory meatus derived?






20. What AD disorder due to a mutation in fibroblast growth factor receptor 3 results in normal - size vertebral column and skull and short - thick extremities?






21. What cell surface marker is found on blood B cells?






22. Name the most common type or cause - Pyogenic osteomyelitis






23. Name the cancer associated with the following tumor markers. (Some may have more than one answer.) x Calcitonin






24. What is the effect of insulin on intracellular K+ stores?






25. Which bacteria are associated with the following pigment production? - Red pigmentation






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






27. What enzyme is inhibited by disulfiram?






28. What structure of the knee is described thus? - Prevents posterior displacement and has medial - to - lateral attachment on the tibia






29. What is the most common primary malignant tumor in bone?






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






31. How can you differentiate vitamin K from vitamin C deficiency by bleeding time and PT levels?






32. RBC casts in the urine






33. What is the term for days 1 to 7 of the female cycle?






34. What CNs arise from x The pons?






35. Why is the cell's resting membrane potential negative?






36. Which of the following is not a risk factor for cholesterol gallstones: pregnancy - OCP use - female gender - hemolytic anemia - cirrhosis - and obesity? (May be more than one answer.)






37. In which syndrome does a person present with intentionally produced physical ailments with the intent to assume the sick role?






38. What virus lies dormant in the x Dorsal root ganglia?






39. Name the cancer associated with the following tumor markers. (Some may have more than one answer.) x CEA






40. What is the only sphingolipid that contains choline and PO4?






41. What is the most common one? - Complication of PDA






42. What are five clinical signs of portal HTN?






43. What is the most common one? - Bone disorder in the United States






44. A 20-year - old black woman goes to you with nonspecific joint pain - fever - and a malar rash over the bridge of her nose and on her cheeks. This is a classic example of What autoimmune disease? What are three autoantibody tests you could order to m






45. The first area to be oxygenated in the liver.






46. How many NADPHs are used per addition of acetyl CoA into a fatty acid chain?






47. What hormone's release is strongly associated with stage 4 sleep?






48. What is the most serious form of tinea capitis - which results in permanent hair loss and is highly contagious?






49. What is the largest nucleus in the midbrain?






50. All Proteus species are...