Test your basic knowledge |

USMLE Step 1 Biochemistry

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. Where is type IV collagen found? to What protein is bound? What is special about this type? How do the different types of collagen differ?






2. Other than glycogenesis and glycolysis - What else is Fructose used for?






3. What is the signal for adenylation? What enzyme does? does it require a template?






4. _______ is ubiquitous






5. What is an example of a nonsense mutation?






6. Why do mitochondrial diseases exhibit variable expression?






7. Where is anaerobic glycolysis used often?






8. What does oligomycin do?






9. Ocular albinism is...






10. What is SAM?






11. Give examples of the anabolic processes that NADPH participates in. From What process is NADPH produced?






12. What are the clinical findings in edwards syndrome?






13. What regulates Fructose 1 -6 bisphosphatase? What reaction is it found in?






14. What is the rate determining enzyme in glycogen synthesis?






15. Which anticancer drugs act on MT? how are they different?






16. There are 2 GTP per...






17. From Where is alk phos release in the bone? What enzyme does it act on? What is the result?






18. What is hypophosphatemia rickets? Can it be treated with Vit D?






19. What are flagella made of?






20. From What aa does serotonin come from? What NT is serotonin a precursor for?






21. What is the result of arginase deficiency?






22. What is the pathogenesis of Goodpasteurs syndrome? What are the main targets?






23. What is used in a marathon?






24. What is the impetus for ketoacidosis in starvation? alcoholism?






25. For What three enzymes is arginine a precursor for?






26. Which is the rate limiting step of the urea cycle?






27. What are permanent cells? Which cells are permanent?






28. give an example of how phenylketonuria is pleiotropic.






29. What is the precursor for both purines?






30. Which antifungal acts on MT?






31. What does SAM turn into after it loses a methyl? How does it get turned back to SAM?






32. Where are secreted proteins synthesized? Where are cellular/organellar proteins synthesized?






33. What are the findings with phenylketonuria?






34. What Ab class blocks DNA gyrase?






35. What ensures that during gluconeogenesis all the ATP wont be used in glycolysis as youre producing it?






36. What is the storage form of vit D? active form?






37. What kind of DNA damage does ionizing radiation cause? What type of repair helps with this?






38. From What aa does glutathione come from?






39. What is the deficient enzyme in Krabbes disease? accumulated Substrate?






40. in What organ is D3 converted from 25 OH D3? with What enzymes?






41. Other than the H2O2 produced from the resp burst in infections - What other things does G6PD reproduce NADPH for glutathione reduction for? What cells are particularly vulnerable to these oxidizing agents?






42. Other than anabolic processes What else is NADPH used for?






43. What do statins inhibit?






44. Vit K in excess can cause _____ in newborns






45. Which RNA polymerase synthesizes rRNA? where?






46. What is the source of Biotin?






47. What type of disease is MERRF? What is the clinical presentation?






48. What explains the fatty change in kwashiokor?






49. Which antihelminthic drugs act on microtubules?






50. What is the other name of Vitamin B6? What is its function?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:



Major Subjects



Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Most popular tests