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DNA Structure and Replication

DNA Structure and Replication
What is the name given to the points at which a DNA helix is unwound and new strands develop?

Replication origins
Replication forks
Okazaki fragments
Leading strands

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DNA Structure and Replication
DNA replication results in

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

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DNA Structure and Replication
Proteins which help to open the double helix for DNA synthesis are

ligase
DNA topoisomerase
single stranded binding proteins
DNA helicases

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DNA Structure and Replication
When DNA polymerase is in contact with guanine in the parental strand, what does it add to the growing daughter strand?

Uracil
Cytosine
Phosphate
Guanine

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DNA Structure and Replication
What does ligase do during replication of DNA?

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

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

result in Okazaki fragments on leading strand
are joined together by DNA ligase
are removed by helicase + ATP
are removed by Pol I

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