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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. The 5prime end (energy for the bond)






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






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






4. Accurate base pairing is required only in the first 2 nucleotide positions of an mRNA so codons differing ht e3rd wobble psoition may code for the same tRNA/amino acid code






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






6. Inhibits bacterials dihydrofolate reducatese down thymine






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






8. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






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






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






11. Antigout - acts on mts






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






13. VItamin C






14. 1) primary transcript combines with snRNPs and other proteins to form spliceosome 2) lariat shaped intermediate is generated 3) Lariat is removed and released to precisely join 2 exons






15. Bind 50S blocking translocation






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






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






18. Phosphorylation - glycosloation - hyderoxylation






19. 2 H bonds greater GC content greater melting point






20. Less condensed - transciptionally active=eu truly transcobed






21. H1






22. ATP






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






24. HS1 - HSB - H2 - H4






25. Inhibits by binding to the potassium side






26. Regulatory proteins that control cell cycle events; phase specific; activated CDKs






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






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






29. Intervening noncoding segments of DNA






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






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






32. Inhibits thymidylate synthase down thymine






33. Base + ribose






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






35. Binds 50S blocking translocation






36. 9+2 arrangement of microtubules -






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






38. Lysine/hydroxylysine and combines to form collagen






39. Made from IMP precursor






40. Uracil






41. Codes for formyl methionine (f - Met)






42. The N to C






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






44. 4 high enrgy bonds






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






46. Tansport cellular cargo toward opposite ends of microtubule tracks






47. Responsible for the accuracy of amino acid selection






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






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






50. Has enough energy to created the peptide bond