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DNA Structure and Replication

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

density
adhesion
resorption
absorption

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

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DNA Structure and Replication
Which of the following would not contain DNA?

Glass crystals
Yeast
Bacteria
Mold

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

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

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

ligase
DNA helicases
single stranded binding proteins
DNA topoisomerase

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

15%
60%
30%
Guanine residue can not be calculated

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