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






2. Microvilli - muscle contraction - cytokinesis - adhering juntions






3. Bind 50S blocking translocation






4. Retrograde to microtubules






5. Responsible for the accuracy of amino acid selection






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






7. 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






8. 9+2 arrangement of microtubules -






9. Odd 30S plus 50 S=70S






10. Change resulting in misreading of all nucleotides downstream - usually resulting in a truncated non functional protien






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






12. Ribonucleotide reductase






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






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






15. Lysine/hydroxylysine and combines to form collagen






16. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)






17. Mutation in nucleotide excision repair Dry skin with melanoma and other cancers






18. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends






19. 1P (blocked by tetracycline)






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






21. 3 H bonds






22. Antifungal - act on microtubules






23. 4 high enrgy bonds






24. Non homologous end joining






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






26. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






27. Cyclin depndent kinases; consituative and inactive






28. Phosphorylation - glycosloation - hyderoxylation






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






30. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






31. Each codon specifies only 1 amino acid






32. Inhibits thymidylate synthase down thymine






33. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site






34. Codes for formyl methionine (f - Met)






35. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments






36. Made from orogate precuror with PRPP added later






37. 5 prime to 3 prime






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






39. Neurons






40. Unattached to any membrane; site of cytosolic and organeller prtoeins






41. Binds 50S blocking translocation






42. Epithelial cells






43. GTP






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






45. Muscle






46. DNA And RNA synthesized in the 5-3 direction






47. Remain in G0 regenerate from stem cells






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






49. G1 - S - G2 - Mitosis






50. Even 40S 60S =80S