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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. Inhibits thymidylate synthase down thymine






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






3. Elastase






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






5. Made from IMP precursor






6. Ribonucleotide reductase






7. Does not






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






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






10. AUG inAUGurates protein synthesis






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






12. 4 high enrgy bonds






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






14. Lysine/hydroxylysine and combines to form collagen






15. 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






16. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)






17. Splicing out of introns






18. Anti breast cancer - acts on mts






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






20. HS1 - HSB - H2 - H4






21. Intervening noncoding segments of DNA






22. Bm - kidney - ears and eyes






23. Microvilli - muscle contraction - cytokinesis - adhering juntions






24. Site of dteroid synthesis and detoxification of druigs and poisons (liver hepatocytes and steroid horomore adrenal cortex)






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






26. Change resulting in early stop codon






27. Create a nick in the helix to relieve supercoils created during replication






28. Hn RNA






29. Prophas - metaphase - anaphase telophase






30. Prevents stranges from reannealing






31. A malfunction of mismatch repair (MUt L etc..)






32. Proline - glycine






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






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






35. Binds 50S blocking translocation






36. 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






37. Type III






38. 2 H bonds greater GC content greater melting point






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






40. CCA AT 3 PRIME END






41. G1 - S - G2 - Mitosis






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






43. Greater melting temperature lower fluidity






44. Inhibits ribonucleotide reductase






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






46. Ketone






47. Inhibits 50S peptidyl transferase






48. Genetic bone disorder (brittle bone disease) type 1 colalgen - fractures (during birth) 2) Blue sclerae 3) hearing loss 4) dental imperfections 1:10000 may be confused with child abuse






49. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






50. CUT 1 ring Cut the Py