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DNA Structure and Replication

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

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

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

A smear
Two
One
Three

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

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

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

single stranded binding proteins
ligase
DNA topoisomerase
DNA helicases

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Depurination
Dehydration
Single strand break
Formation of thymine dimers

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DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

TFIID
bZIP
helix-turn-helix
zinc finger

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