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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. Uracil






2. Splicing out of introns






3. 3 H bonds






4. Hydroxy proline and hydroxylysine






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






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






7. Microvilli - muscle contraction - cytokinesis - adhering juntions






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






9. 2 H bonds greater GC content greater melting point






10. Odd 30S plus 50 S=70S






11. Be So Totatally Cool Read Books (bOne - CarTWOlage - Threeticular - Type IV under the floor)






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






13. HS1 - HSB - H2 - H4






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






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






16. Lysine/hydroxylysine and combines to form collagen






17. Elastase






18. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






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






20. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility






21. Epithelial cells






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






23. Neurons






24. Inhibits by binding to the potassium side






25. Does not






26. GTP






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






28. One codon AUG






29. Cyclin depndent kinases; consituative and inactive






30. Inhibits dihydrofolate reductase down thymine






31. Has enough energy to created the peptide bond






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






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






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






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






36. Antigout - acts on mts






37. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits






38. Never go to Go divide rapidly with short G1 bone marrow - gut epithelium - skin - hair follicles






39. Different exons can be combined to make nique protiens in different times






40. Remain in G0 regenerate from stem cells






41. The N to C






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






43. Even 40S 60S =80S






44. P53 and RB normally inhibit g1 to S progression






45. 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






46. Blocks denovo purine synthesis






47. Codes for formyl methionine (f - Met)






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






49. Intervening noncoding segments of DNA






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







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