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DNA Structure and Replication

DNA Structure and Replication
In an agarose gel, DNA is moving from

anode to cathode
A to B
cathode to anode
left to right

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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
protamines
pyrimidines
All of these

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DNA Structure and Replication
An RNA primer is synthesized by

DNA helicases
ligase
DNA topoisomerase
primase

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DNA Structure and Replication
What does ligase do during replication of DNA?

Synthesizes the lagging strand
Digests mRNA when it is no longer needed
Joins nicks in DNA strands
Makes copies of mRNA from DNA

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DNA Structure and Replication
Reverse transcriptase produces

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

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DNA Structure and Replication
The DNA polymerase in bacteria, responsible for DNA synthesis is

all of these
Polymerase III
Polymerase II
Polymerase I

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