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DNA Structure and Replication

DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

helicase
none of these
strandase
DNA polymerase

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

resorption
adhesion
density
absorption

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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

protamines
pyrimidines
All of these
purines

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DNA Structure and Replication
Reverse transcriptase produces

RNA from RNA
RNA from DNA
DNA from peptides
DNA from RNA

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

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

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One medium band
One light and one medium band
One light, one medium and one heavy band

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