Test your basic knowledge |

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. Elastase






2. Strethchy protein within lungs - large artiers - elastic liaments - vocal cords - ligamenta flava)






3. 1P (blocked by tetracycline)






4. H1 string






5. Anti breast cancer - acts on mts






6. Cleave terminal regions of procollagen to transform into insoluable tropocolagen






7. Inhibits dihydrofolate reductase down thymine






8. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.






9. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed






10. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly






11. ATP- AMP (2 phosphoanhydride bonds)






12. 2 H bonds greater GC content greater melting point






13. UGA - UAG - UAA






14. Inhibits 50S peptidyl transferase






15. CUT 1 ring Cut the Py






16. Immotile cilia due to a dyenin arm defect. Results in male nad female inferticility (sperm immotile) - bronchiectasis - and recurrent sinusisits - associated with situs inversus






17. Non homologous end joining






18. P53 and RB normally inhibit g1 to S progression






19. Connective tissue






20. Less condensed - transciptionally active=eu truly transcobed






21. Base+ribose+phosphate linked by a phosphodiester bond






22. Site where RNA polymerase and multiple other transciption factors bind to DNA upstream from gene locus (AT rich upstream sequence with TATA and CAAT boxes)






23. Prophas - metaphase - anaphase telophase






24. Create a nick in the helix to relieve supercoils created during replication






25. Aminoacyl - tRNA binds to A site 2) peptidyltransferase catalyzes peptide bond formation transfers growing polypeptie to amino acid in A site 3) ribosome advances 3 nucleotides toward the 3 prime end of RNA moving peptiydyl RNA to P site






26. Specific glycosylases recognize and remove damaged bases - AP endonuclease cuts DNA at pyrimidne site - empty sugar is removed and the gap is filled and resealed






27. Methionine - which may be removed before translation is completed






28. Tansport cellular cargo toward opposite ends of microtubule tracks






29. Antifungal - act on microtubules






30. Neuroglia






31. Neurons






32. Unwinds DNA template at replication fork






33. 9+2 arrangement of microtubules -






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






35. Inhibits ribonucleotide reductase






36. Completed protein is released from ribosme through simple hydrolosis and dissociates






37. Hydroxy proline and hydroxylysine






38. Splicing out of introns






39. MRNA






40. Capping on 5 prime end (7 methylguanosine) -






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






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






43. Ribonucleotide reductase






44. The 5prime end (energy for the bond)






45. VItamin C






46. Blocks denovo purine synthesis






47. 4 high enrgy bonds






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






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






50. The 3 prime hydroxyl of the nascent chain is the target