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DNA Structure and Replication

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

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

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase
restriction endonuclease
reverse transcriptase
transposase

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

linking number
twisting number
none of these
helix frequency

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DNA Structure and Replication
Which will require a higher temperature to denature?

DNA with a high G-C content
RNA with a high G-C content
DNA with a high A-T content
RNA with a high A-T content

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DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

none of these
One
About 100
Thousands and tens of thousands

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

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

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