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DNA Structure and Replication

DNA Structure and Replication
A cesium chloride will separate DNA molecules by

resorption
density
absorption
adhesion

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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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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

low temperature and Mg++
high temperature and Mg++
high temperature and Ca++
low temperature and Ca++

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DNA Structure and Replication
Which of the following enzyme adds complementary bases during replication?

Polymerase
Replicase
Helicase
Synthesase

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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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DNA Structure and Replication
The site on a bacterial chromosome that marks the initiation point for chromosome replication is called

a promoter
Ori
an initiation codon
Pro

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