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DNA Structure and Replication

DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

RNA polymerase
both (a) and (b)
primase
reverse transcriptase

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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?

One
About 100
none of these
Thousands and tens of thousands

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DNA Structure and Replication
What is the approximate percentage of repetitive DNA sequences in human DNA?

10 to 20%
30 to 40%
40 to 50%
20 to 30%

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DNA Structure and Replication
DNA replication takes place in which direction?

3' to 5'
Randomly
5 'to 3'
Vary from organism to organism

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DNA Structure and Replication
TM refers to the temperature at which

All of these
50% of a protein molecules are denatured
membranes are 50% fluid
50% of a DNA molecule is denatured

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

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

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