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DNA Structure and Replication

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

zinc finger
bZIP
TFIID
helix-turn-helix

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DNA Structure and Replication
What is the only common methylation in the DNA of eukaryotes?

Adenosine in GpA dinucleotides
Cytosine in CpG dinucleotides
None of these
Guanosine in ApGpA trinucleotides

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DNA Structure and Replication
30 nm wide helix with five or six nucleosomes per helix is known as

none of these
solenoid
halonoid
kinoplast

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

all of these
with 14N-containing DNA
above DNA containing 14N
below DNA containing 14N

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DNA Structure and Replication
An important difference between eukaryotic and prokaryotic DNA replication is

multiple origins of replication in eukaryotes
eukaryotic DNA polymerases are faster
more DNA polymerases are found in eukaryotes
RNA primers are not required in eukaryotes

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

100 °C
70 °C
60°C
90 °C

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