Ch 8 micro

  1. A gene is best defined as




    A)
  2. Which of the following pairs is mismatched?




    B)
  3. Which of the following statements is false?




    B)
  4. DNA is constructed of




    C)
  5. Which of the following is NOT a product of transcription?




    A)
  6. Which of the following statements about bacteriocins is false?





    B)
  7. An enzyme produced in response to the presence of a substrate is called




    C)
  8. When glucose is high, cAMP is ________ : CAP ________ bind the lac operator, and RNA polymerase ________ bind the lac promoter.




    D)
  9. Transformation is the transfer of DNA from a donor to a recipient cell




    C)
  10. Genetic change in bacteria can be brought about by




    E)
  11. Which of the following statements is false regarding a bacterium that is R+?




    E)
  12. The initial effect of ionizing radiation on a cell is that it causes




    C)
  13. According to the operon model, for the synthesis of an inducible enzyme to occur, the




    C)
  14. Synthesis of a repressible enzyme is stopped by




    C)
  15. The damage caused by ultraviolet radiation is




    C)
  16. Conjugation differs from reproduction because conjugation




    B)
  17. The necessary ingredients for DNA synthesis can be mixed together in a test tube. The DNA polymerase is from Thermus aquaticus, and the template is from a human cell. The DNA synthesized would be most similar to




    D)
  18. The mechanism by which the presence of glucose inhibits the arabinose operon is




    B)
  19.  The mechanism by which the presence of arabinose controls the arabinose operon is




    B)
  20. If you knew the sequence of nucleotides within a gene, which one of the following could you determine with the most accuracy?




    E)
  21. An enzyme that makes covalent bonds between nucleotide sequences in DNA is





    E)
  22. An enzyme that copies DNA to make a molecule of RNA is




    B)
  23. An enzyme that cuts double-stranded DNA at specific nucleotide sequences.




    A)
  24. Repair of damaged DNA might be viewed as a race between an endonuclease and




    A)
  25. The cancer gene ras produces mRNA containing an extra exon that includes a number of UAA codons. Cancer cells produce ras mRNA missing this exon. This mistake most likely is due to a mistake by




    C)
  26. In transcription,




    E)
  27. Assume the two E.coli strains shown below are allowed to conjugate.Hfr:  pro+, arg+, his+, lys+, met+, ampicillin-sensitive
    F:  pro-, arg-, his-, lys-, met-, ampicillin-resistantWhat supplements would you add to glucose minimal salts agar to select for a recombinant cell that is lys+, arg+, amp-resistant?




    B)
  28. Protein synthesis in eukaryotes is similar to the process in prokaryotes in that both eukaryotes and prokaryotes




    C)
  29. Transfer of DNA from a donor to a recipient cell by a bacteriophage




    D)
  30. Transfer of DNA from a donor to a recipient as naked DNA in solution. 





    D)
  31. Feedback inhibition differs from repression because feedback inhibition




    C)
  32. Bacteria can acquire antibiotic resistance by all of the following except




    E)
  33. Suppose you inoculate three flasks of minimal salts broth with E coli.  Flask A contains glucose.  Flask B contains glucose and lactose.  Flask C contains lactose.  After a few hours of incubation, you test the flasks for the presence of B-galactosidase.  Which flask(s) do you predict will have this enzyme? 





    D)
  34. Plasmids differ from transposons in that plasmids




    B)
  35. Mechanism by which the presence of glucose inhibits the lac-operon




    B)
  36. Mechanism by which the presence of glucose controls the lac-operon 




    D)
  37. Two offspring cells are most likely to inherit which one of the following from the parent cell? 




    D)
  38. Which of the following is not a method of horizontal gene transfer?




    B)
Author
XQWCat
ID
176678
Card Set
Ch 8 micro
Description
ch 8 micro test 2
Updated