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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
reverse transcriptase
transposase
restriction endonuclease

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DNA Structure and Replication
How does ethidium bromide interact with DNA?

It does not interact
It intercalates between bases
It binds to phosphate
It binds to adenine

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DNA Structure and Replication
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

using enzyme called telomerase
using RNA as a template
None of these
shortening of the double stranded replicated portion

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DNA Structure and Replication
Each replication bubbles consists of

1 replication forks
3 replication forks
2 replication forks
4 replication forks

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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?

Thousands and tens of thousands
One
none of these
About 100

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DNA Structure and Replication
Which polymerase is active in DNA repairing

none of these
Polymerase III
Polymerase I
Polymerase II

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