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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. Seals






2. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






3. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances






4. Connective tissue






5. Uracil






6. Poly adenylation






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






8. CCA AT 3 PRIME END






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






10. 3 H bonds






11. The 3 prime hydroxyl of the nascent chain is the target






12. Retrograde to microtubules






13. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






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






15. Prevents stranges from reannealing






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






17. Base + ribose






18. Phosphorylation - glycosloation - hyderoxylation






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






20. 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






21. 4 high enrgy bonds






22. You glyucosolate hte pro - alpha chain lysine resudens and form procollagen (triple helix of alpha chains)






23. Hydroxy proline and hydroxylysine






24. Methionine - which may be removed before translation is completed






25. 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






26. Contain the actual genetic information coding for protein






27. Each codon specifies only 1 amino acid






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






29. 2 H bonds greater GC content greater melting point






30. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy






31. Inhibits bacterials dihydrofolate reducatese down thymine






32. Inhibits thymidylate synthase down thymine






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






34. Cyclin depndent kinases; consituative and inactive






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






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






37. Neurons - skeletal - and cardiac muscle - RBCs






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






39. Change resulting in early stop codon






40. The 3 prime end






41. Inhbits RNA pol II (found in death cap mushrooms)






42. The N to C






43. Ketone






44. Substituting a pyramidine for a pyrimadine






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






46. Made from IMP precursor






47. Odd 30S plus 50 S=70S






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






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






50. Inhibit DNA gyrase (specific prokaryotic topoisomerase)