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DNA Structure and Replication

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

Three
Two
One
A smear

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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
TM refers to the temperature at which

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

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DNA Structure and Replication
The chromosomal DNA complexes with

two types of histone as H1 and H4
five types of histone as H1, H2A, H2B, H3 and H4
four types of histone as H1, H2A, H3 and H4
three types of histone as H1, H2A and H4

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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
Thousands and tens of thousands
none of these

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DNA Structure and Replication
Enzyme, responsible for proofreading base pairing is

Telomerase
DNA polymerase
DNA ligase
Primase

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