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DNA Structure and Replication

DNA Structure and Replication
How does ethidium bromide interact with DNA?

It binds to phosphate
It does not interact
It intercalates between bases
It binds to adenine

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DNA Structure and Replication
In an agarose gel, DNA is moving from

anode to cathode
left to right
A to B
cathode to anode

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DNA Structure and Replication
Deoxyribonucleoside triphosphates, being need in the chain termination methods are

dGTP and dCTP
dTTP
all of these
dATP

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DNA Structure and Replication
DNA polymerases I also has

5'-3' exonuclease activity
both (a) and (b)
5'-3' endonuclease activity
3'-5'exonuclease activity

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAb, gyrase
DNAa, gyrase
Single stranded protein, DNAa
DNAb, DNA polymerase

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

are removed by helicase + ATP
are removed by Pol I
are joined together by DNA ligase
result in Okazaki fragments on leading strand

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