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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. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






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






3. Responsible for the accuracy of amino acid selection






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






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






6. Inhibits ribonucleotide reductase






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






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






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






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






11. P53 and RB normally inhibit g1 to S progression






12. UGA - UAG - UAA






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






14. MRNA






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






16. Non homologous end joining






17. Even 40S 60S =80S






18. Bind 30S subunit preventing attachment of aminoacyl - tRNA






19. Intervening noncoding segments of DNA






20. 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)






21. 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






22. 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






23. Type III






24. Contain the actual genetic information coding for protein






25. Unwinds DNA template at replication fork






26. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






27. 5 prime to 3 prime






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






29. Made from orogate precuror with PRPP added later






30. Methyl THYmine has a meTHYl






31. 1P blocked by chloramphenicaol and macrolide






32. Hn RNA






33. Anti breast cancer - acts on mts






34. Antigout - acts on mts






35. 2 H bonds greater GC content greater melting point






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






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






38. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.






39. Commonly results in dramatic decrease in amount of gene transcribed






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






41. Binds 50S blocking translocation






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






43. Inhibits by binding to the potassium side






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






45. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






46. The 3 prime end






47. Base + ribose






48. Proline - glycine






49. Genetic code is conserved throughout evolution






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