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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. ATP






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






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






4. Less condensed - transciptionally active=eu truly transcobed






5. Cyclin depndent kinases; consituative and inactive






6. CUT 1 ring Cut the Py






7. Read froma fixed starting point as a continous sequenecs of bases






8. Intervening noncoding segments of DNA






9. Bind 50S blocking translocation






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






11. Binds 50S blocking translocation






12. Odd 30S plus 50 S=70S






13. Ketone






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






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






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






17. Bm - kidney - ears and eyes






18. Made from IMP precursor






19. Exocytose procollagen into extracellylar sace






20. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






21. 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






22. 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






23. Muscle






24. 2 H bonds greater GC content greater melting point






25. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






26. H1






27. 3 H bonds






28. Substituting a pyramidine for a pyrimadine






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






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






31. Substituting a purine for a pyrimdine or vice versa






32. ATP- AMP (2 phosphoanhydride bonds)






33. Anti cancer - act on microtubules






34. Does not






35. Anti breast cancer - acts on mts






36. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






37. The 3 prime end






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






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






40. Inhibits bacterials dihydrofolate reducatese down thymine






41. Uracil






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






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






44. Change resulting in early stop codon






45. The N to C






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






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






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






49. AUG inAUGurates protein synthesis






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