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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

helicase
restriction endonuclease
reverse transcriptase
transposase

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DNA Structure and Replication
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

antiparallel
discontinuous
semiconservative
mutational

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Dehydration
Formation of thymine dimers
Single strand break
Depurination

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

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

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DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

One
About 100
none of these
Thousands and tens of thousands

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

none of these
linking number
twisting number
helix frequency

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