Test your basic knowledge |

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. What residues are hydroxylated in step 2 of collagen synthesis - and What does this require






2. What substance inside the cell reduces glutatione






3. What happens in vit D excess






4. What trinucleotide repeat in Huntingtons and what chromosome is it found on...






5. What defects characterize velocardiofacial syndrome






6. what disease can cause pellagra






7. depression - progressive dementia - choreiform movements - caudate atrophy and dec levels of GABA and ACH in the brain






8. What shape does the RNA generate during splicing and why?






9. What is the activated carrier for methyl groups






10. What is the TX for PKU






11. What is the results of vit B1 def






12. What shuttle is used in fatty acid degredation and What does it move and From where to where






13. spheroid RBCs due to spectrin or ankyrin defect - hemolytic anemia - inc MHCH - splenectomy is curative






14. What are the results of CF on male fertility






15. Which bond is stronger AT or CG and why? What is the laboratory consequence of this?






16. What is the treatment for cystathionine synthase def






17. What does vit C def cause






18. What are the mRNA stop codons






19. What does the golgi do to sugars in proteoglycans and of selected tyrosine on proteins






20. Acetyl - CoA carboxylase catalyzes what rxn






21. Which enzyme involved in RNA synthesis does not require a template






22. What happens in carnitine def






23. Mediates reverse cholesterol transport from periphery to liver - acts as respository for apoC an apoE - secreted from both liver and small intestine






24. What is the fxn of vit K






25. What step begins the urea cycle and What is the enzyme needed - Where does it happen






26. What is the hardy weinber heterozygote prevalence






27. How is ATP used by the cell






28. What causes maple syrup urine disease and What does it lead to...






29. How does chloramphenicol work






30. In which single strand DNA repair mechanism do specific endonucleases release the oligonucTIDE containing bases and DNA poly and ligase fill and reseal - and what disease occures when this is mutated






31. What is the physiologic role of dystrophin






32. What substance in egg whites binds biotin






33. What does a phosphatase do






34. How does patients present with ADPKD






35. What is the amino acid precuror for creatine - urea and nitric oxide






36. What step of uric acid synthesis does xanthine oxidase catalyze






37. What does NADPH oxidase deficiency result in and why






38. What two enzymes are involved in EtOH metabolism






39. How does ethanol induce hypoglycemia






40. What is a nonsense mutation






41. What are the fat soluble vitamins and What does their absorption depend on...






42. characterize mitochondrial inheritance






43. What kind of branches do glycogen branches have






44. Which type of chromatin is less condensed - transcriptionally active - sterically accesible






45. What is the amino acid precursor for GABA and glutathione






46. What happens in a B12 def






47. Wgat substances directly inhibit mitochondrial ATPase - causing an inc in proton gradient - no ATP because pump is stopped






48. What does arsenic do and What are th results of poisoning






49. What other inflammatory process can induce a hemolytic anemia in NADPH defieicnt patients






50. What is the activated carrier for aldehyddes