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First Aid: Biochemistry Molecular

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. Condensed - transciptionally inactive HC- Highly condensed






2. Codes for formyl methionine (f - Met)






3. Close to - far from or even within (in an intron) the gene whose expression it regulates






4. P53 and RB normally inhibit g1 to S progression






5. Does not






6. Epithelial cells






7. The 3 prime end






8. VItamin C






9. Bind 30S subunit preventing attachment of aminoacyl - tRNA






10. Elastase






11. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy






12. Cyclin depndent kinases; consituative and inactive






13. Site where negative regulators bind






14. 9+2 arrangement of microtubules -






15. Inhibits by binding to the potassium side






16. Inhbits RNA pol II (found in death cap mushrooms)






17. 1) primary transcript combines with snRNPs and other proteins to form spliceosome 2) lariat shaped intermediate is generated 3) Lariat is removed and released to precisely join 2 exons






18. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






19. Site of dteroid synthesis and detoxification of druigs and poisons (liver hepatocytes and steroid horomore adrenal cortex)






20. Attachment of ubiquitin to defective proteinds to tag them for breakdown






21. Regulatory proteins that control cell cycle events; phase specific; activated CDKs






22. One codon AUG






23. Inhibits 50S peptidyl transferase






24. In the nucleus after transcitpion and only processed RNA is transporte out of the nucleus






25. Particular sequnece in genomre where DNA replication begins. May be single (prokaryotes) or multiple (eukaryotes)






26. Proline - glycine






27. (A - G) 2 rings Pure As Gold






28. RER translation of collagen alpha chains (preprocollagen) usually Gly-X-Y






29. Same aa often base change in 3rd position of codon






30. GTP






31. You glyucosolate hte pro - alpha chain lysine resudens and form procollagen (triple helix of alpha chains)






32. Different exons can be combined to make nique protiens in different times






33. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap






34. CCA AT 3 PRIME END






35. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets






36. More than 1 codon may code for the same amino acid






37. Makes an RNA primer on which DNA polymerase II can initiate replication






38. H1






39. Substituting a pyramidine for a pyrimadine






40. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.






41. Each codon specifies only 1 amino acid






42. Anit helminth - act on microtubules






43. 4 high enrgy bonds






44. Ketone






45. Greater melting temperature lower fluidity






46. Must be both activated and inactivated for cell cycle to progress






47. Commonly results in dramatic decrease in amount of gene transcribed






48. Read froma fixed starting point as a continous sequenecs of bases






49. UGA - UAG - UAA






50. Inhibits ribonucleotide reductase