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DNA Structure and Replication

DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

none of these
DNA polymerase
helicase
strandase

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

twisting number
none of these
linking number
helix frequency

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DNA Structure and Replication
DNA replication results in

one new molecule of RNA
two DNA molecules such that each one contains a strand of the original
two completely new DNA molecules
one new DNA molecules 1 old molecule

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DNA Structure and Replication
Each replication bubbles consists of

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

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DNA Structure and Replication
The role of primase is to

cleave and unwinds short sections of DNA ahead of the replication fork
synthesize an RNA primer to begin the elongation process
dismantle RNA primer
proofread base pairing

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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?

About 100
Thousands and tens of thousands
none of these
One

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