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DNA Structure and Replication

DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

restriction endonuclease
reverse transcriptase
transposase
helicase

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

50 to 60°C
80 to l00°C
60 to 80°C
70 to 90°C

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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 DNA molecules 1 old molecule
one new molecule of RNA

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

helicase
DNA polymerase
DNA ligase
primase

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DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

positive pole
negative pole
will not migrate
none 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

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

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