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






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






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






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






5. Muscle






6. 2 H bonds greater GC content greater melting point






7. P53 and RB normally inhibit g1 to S progression






8. Elastase






9. Microvilli - muscle contraction - cytokinesis - adhering juntions






10. Type III






11. Bm - kidney - ears and eyes






12. Inhibits bacterials dihydrofolate reducatese down thymine






13. 4 high enrgy bonds






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






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






16. Does not






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






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






19. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA






20. Genetic code is conserved throughout evolution






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






22. ATP- AMP (2 phosphoanhydride bonds)






23. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






24. Codes for formyl methionine (f - Met)






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






26. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds






27. 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






28. UGA - UAG - UAA






29. Antigout - acts on mts






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






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






32. Even 40S 60S =80S






33. Inhibits ribonucleotide reductase






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






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






36. 5 prime to 3 prime






37. Made from IMP precursor






38. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






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






40. Prevents stranges from reannealing






41. Seals






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






43. CUT 1 ring Cut the Py






44. Neurons - skeletal - and cardiac muscle - RBCs






45. Cyclin depndent kinases; consituative and inactive






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






47. HS1 - HSB - H2 - H4






48. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






49. H1 string






50. Odd 30S plus 50 S=70S