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First Aid: Biochemistry Molecular

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Unattached to any membrane; site of cytosolic and organeller prtoeins






2. Bm - kidney - ears and eyes






3. Made from IMP precursor






4. Prokaryotic only. Degrades RNA primer and fills in the gap with DNA (5 prime to 3 prime exonuclease)






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






6. Hn RNA






7. Base + ribose






8. Odd 30S plus 50 S=70S






9. Greater melting temperature lower fluidity






10. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine






11. 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)






12. Antifungal - act on microtubules






13. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)






14. Does not






15. Inhibits dihydrofolate reductase down thymine






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






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






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






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






20. Retrograde to microtubules






21. Connective tissue






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






23. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture






24. Introns stay In the nucleus whereas EXons EXit and are EXpressed






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






26. CCA AT 3 PRIME END






27. One codon AUG






28. Cyclin depndent kinases; consituative and inactive






29. Hydroxy proline and hydroxylysine






30. Prokaryotic only. Elongates leading strand by adding deoxynucleotides to the 3prime end. Elongates laggin strand. 3 prime to 5 prime exonuclease activity






31. Non homologous end joining






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






33. Poly adenylation






34. Proline - glycine






35. Methyl THYmine has a meTHYl






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






37. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints






38. Condensed - transciptionally inactive HC- Highly condensed






39. 3 H bonds






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






41. Inhibit formation of the initation complex and cause misreading of mRNA






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






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






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






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






46. HS1 - HSB - H2 - H4






47. Stretch of DNA that alters gene expression by binding transcription factors






48. Remain in G0 regenerate from stem cells






49. Intervening noncoding segments of DNA






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







Sorry!:) No result found.

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