What are the major differences between eukaryotic and bacterial DNA replication? Choose items below that are found in eukaryotic DNA replication.
DNA is wrapped around histones
DNA is circular
helicase separates the two strands of DNA
gyrase releives torsional stress
DNA is linear
the ends of chromosomes shorten with each cell division in most cells
DNA replication is terminated by the Tus/Ter complex
DNA replication is terminated when replication bubbles meet
DNA polymerase III replicates both leading and lagging strands of DNA
DNA replication is initiated when Iniator proteins bind to the origin of replication
licensing factors ensure that each origin of replication is used only once
What are the major differences between eukaryotic and bacterial DNA replication? Choose items below that are found in eukaryotic DNA replication.
DNA is wrapped around histones | ||
DNA is circular | ||
helicase separates the two strands of DNA | ||
gyrase releives torsional stress | ||
DNA is linear | ||
the ends of chromosomes shorten with each cell division in most cells | ||
DNA replication is terminated by the Tus/Ter complex | ||
DNA replication is terminated when replication bubbles meet | ||
DNA polymerase III replicates both leading and lagging strands of DNA | ||
DNA replication is initiated when Iniator proteins bind to the origin of replication | ||
licensing factors ensure that each origin of replication is used only once |
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3. | Based on what you have learned about the experiments conducted by Griffith and Avery and colleagues with bacteria, which of the following would result in transformation of living R cells? | ||||||||||
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4. | A-T base pairs in a DNA double helix | ||||||||||
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5. | If 23 percent of the bases in a sample of double-stranded DNA are adenine, what percentage of the bases are uracil? | ||||||||||
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6. | The uniform diameter of the DNA structure provides evidence for | ||||||||||
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7. | If a sequence of one strand of DNA is 5â²-TGACTATC-3â², what is the complementary strand? | ||||||||||
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8. | What structural aspect of the DNA facilitates dissociation of the two DNA strands for replication? | ||||||||||
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9. | If the MeselsonâStahl density gradient experiment had resulted in two bands of DNA molecules after only one round of replication, one containing only 15N and the second only 14N, this result would have indicated that replication was | ||||||||||
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11. | Which of the following does not demonstrate the stability of the DNA double helix? | ||||||||||
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12. | What effect would a primase inhibitor have on DNA replication? | ||||||||||
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13. | To replicate their DNA in a timely manner, most eukaryotic chromosomes | ||||||||||
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14. | Which statement about DNA replication is false? | ||||||||||
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15. | In many eukaryotes, there are repetitive sequences called telomeres at the ends of chromosomes. After successive rounds of DNA replication, the _______ strand becomes shorter. In some cells, an enzyme called _______ repairs the shortened strand. | ||||||||||
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16. | A researcher studies normal human fibroblast cells. They can be maintained in culture but die off after about 30 cell generations. Unexpectedly, a colony of cells continues to survive and divide past 30 generations. Which scenario is most likely true for these cells? | ||||||||||
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17. | If DNA polymerase III introduces an incorrect nucleotide, what is the first corrective action made by the DNA repair system? | ||||||||||
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18. | Choose the correct order of the following four events in the excision repair of DNA: (1) Base-paired DNA is made complementary to the template. (2) Damaged bases are recognized. (3) DNA ligase seals the new strand to existing DNA. (4) Part of a single strand is excised. | ||||||||||
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19. | Six complete cycles of PCR should result in a _______-fold increase in the amount of DNA. | ||||||||||
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20. | When double-stranded DNA is heated to temperatures above 90°C, it denatures. Denaturation is a process that | ||||||||||
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