Download Bozeman DNA Replication Name http://www.youtube.com/watch?v

Bozeman DNA Replication
Name _____________________
http://www.youtube.com/watch?v=FBmO_rmXxIw
Watch the video using the link shown above to learn about DNA replication. Answer
the questions below:
1.
2.
3.
4.
5.
When in the cell cycle does DNA replication occur?
What do prokaryotes use as a method to copy their cells?
What are the three theories of DNA replication?
How did the Meselson-Stahl experiment prove the semi-conservative theory?
In the semiconservative theory, where does the DNA split? What are the two
“old” strands used for in the process?
6. Why is DNA said to be “anti-parallel”? How is each side of the DNA labeled?
7. Fill out the chart below, which identifies the key proteins involved in DNA
replication. Label each one’s function.
ENZYME
Helicase
FUNCTION
Single strand binding proteins
DNA polymerase
RNA primase
DNA ligase
8. To which end of the DNA can DNA polymerase add new nucleotides?
9. How does the process of adding new nucleotides to the leading strand differ
from the process of adding nucleotides to the lagging strand?
10. Why is an RNA primer needed in DNA replication?
11. What are Okazaki fragments?
12. How many origins of replication are there in prokaryotes?
13. Why do eukaryotes need several origins of replication moving in both
directions?