Tuesday, July 14, 2009

Dna replication questions?

gettin ready for another exam and just have 3 questions id like a little help on.





1.DNA polymerase requires the presence of a primer before replication of DNA can begin. The primer supplies-





a. a free 3'-OH end upon which to build nascent DNA.


b. the energy necessary to catalyze the synthesis of nascent DNA.


c. a DNA template which can be copied.


d. a 5' to 3' exonuclease activity.


e. nucleotides that can be synthesized into DNA





2-The enzyme responsible for connecting Okazaki fragments on the newly synthesized lagging strand is





a. DNA ligase.


b. DNA polymerase.


c. DNA gyrase.


d. DNase.


e. Single-Stranded Binding protein (SSB)

Dna replication questions?
ooh im taking biology also i hope you get the answers you need.
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