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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. Does not






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






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






4. Nucleotide excision repair - Base Excision repair - Mismath repair






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






6. Odd 30S plus 50 S=70S






7. Made from orogate precuror with PRPP added later






8. One codon AUG






9. Cilia - glagella - mitotic spindle - neurons - centrioles






10. Inhibits by binding to the potassium side






11. Contain the actual genetic information coding for protein






12. Uracil






13. Inhibits thymidylate synthase down thymine






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






15. 3 H bonds






16. Methyl THYmine has a meTHYl






17. Activated by GTP hydrolosis initiation factors help assembel the 40 S ribosomal subunites with the initiatior tRNA and are released whent he mRNA and the ribosomal subunit assemple with the complex






18. Hn RNA






19. Less condensed - transciptionally active=eu truly transcobed






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






21. G1 - S - G2 - Mitosis






22. Ketone






23. Brings together 2 ends of DNA fragments no requirement for homology






24. 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






25. Changed aaconservative - new aa is similar in chemical structure






26. Ribonucleotide reductase






27. Microvilli - muscle contraction - cytokinesis - adhering juntions






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






29. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA






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






31. Each codon specifies only 1 amino acid






32. 2 H bonds greater GC content greater melting point






33. Tansport cellular cargo toward opposite ends of microtubule tracks






34. Anti breast cancer - acts on mts






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






36. HS1 - HSB - H2 - H4






37. Y shaped region along DNA template where leading and lagging strands are syntehsized






38. 1P blocked by chloramphenicaol and macrolide






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






40. Inhibits bacterials dihydrofolate reducatese down thymine






41. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






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






43. Retrograde to microtubules






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






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






46. Antifungal - act on microtubules






47. Has enough energy to created the peptide bond






48. Neurons






49. Unwinds DNA template at replication fork






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