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DNA Structure and Replication

DNA Structure and Replication
Messelsen and Stahl model of replication was called

Cri du Chat
dispersive replication
semi-conservative replication
conservative replication

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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
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
What does ligase do during replication of DNA?

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

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DNA Structure and Replication
First evident that DNA is genetic material comes from the experiment of Griffith is

transformation
translation
replication
transduction

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

adhesion
absorption
density
resorption

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