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DNA Structure and Replication

DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

protamines
All of these
purines
pyrimidines

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

70 °C
100 °C
60°C
90 °C

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

are removed by helicase + ATP
are removed by Pol I
result in Okazaki fragments on leading strand
are joined together by DNA ligase

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DNA Structure and Replication
DNA replication results in

two completely new DNA molecules
two DNA molecules such that each one contains a strand of the original
one new DNA molecules 1 old molecule
one new molecule of RNA

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase III
Polymerase I
none of these
Polymerase II

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

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

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