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DNA Structure and Replication

DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

Tunicamycin
All of these
Bleomycin
Erythromycin

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

purines
pyrimidines
protamines
All of these

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

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

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

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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?

About 100
Thousands and tens of thousands
none of these
One

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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 molecule of RNA
one new DNA molecules 1 old molecule

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