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Chapter 12
DNA Replication
10
Chemistry
Undergraduate 4
12/12/2013

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Cards

Term
What does the abbreviation “DNA Pol” represent in molecular biology?
Definition
DNA polymerase
Term
Draw replication fork
Definition
[image]
Term
What is the function of DNA Pol III?
Definition

DNA Pol III synthesizes new DNA at the replication fork (“elongation”).

 
Term
In what direction is DNA synthesized by DNA polymerases?
Definition
5' to 3'
Term
What is the function of DNA Pol I?
Definition

DNA Pol I removes the RNA primers made by primase and fills with DNA.

 
Term

What is the function of the primers that are synthesized by primase in the

replication fork?

Definition

The primers synthesized by primase provide 3' ends of RNA, to which DNA Pol

III adds nucleotide residues during DNA synthesis.

 
Term

What is the processivity factor of the DNA Pol III holoenzyme and how does

this factor promote processivity?

Definition
The β-subunit of the DNA Pol III holoenzyme promotes processivity by encircling DNA through noncovalent dimerization.
Term
What does the acronym “SSB” represent in molecular biology?
Definition
single-stranded binding protein
Term

Draw the ligase reaction, labeling the oxygens that participate in the reaction

according to their numbering in the sugar residues.

 
Definition
[image]
Term
What limitation of DNA replication necessitates telomerase? Include a diagram.
Definition
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