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






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






3. 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






4. Substituting a purine for a pyrimdine or vice versa






5. Less condensed - transciptionally active=eu truly transcobed






6. H1






7. Activated by GTP hydrolosis initiation factors help assembel the 40 S ribosomal subunites with the initiatior tRNA and are released whent he mRNA and the ribosomal subunit assemple with the complex






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






9. P53 and RB normally inhibit g1 to S progression






10. HS1 - HSB - H2 - H4






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






12. Intervening noncoding segments of DNA






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






14. Change resulting in early stop codon






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






16. Hn RNA






17. Bm - kidney - ears and eyes






18. Each codon specifies only 1 amino acid






19. The 5prime end (energy for the bond)






20. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






21. Alpha 1 antitrypisn






22. Retrograde to microtubules






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






24. Inhibits thymidylate synthase down thymine






25. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






26. Inhibits by binding to the potassium side






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






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






29. Inhibits ribonucleotide reductase






30. Bind 50S blocking translocation






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






32. Ribonucleotide reductase






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






34. Neurons






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






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






37. Microvilli - muscle contraction - cytokinesis - adhering juntions






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






39. One codon AUG






40. Remain in G0 regenerate from stem cells






41. Muscle






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






43. 3 H bonds






44. Antifungal - act on microtubules






45. Elastase






46. Made from orogate precuror with PRPP added later






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






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






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






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