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DNA Structure and Replication

DNA Structure and Replication
The accepted hypothesis for DNA replication is

dispersive theory
semi-conservative theory
evolutionary theory
conservative theory

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

phage DNA was similar to bacterial DNA
proteins and DNA were responsible for heredity
the ratio of Adenine to thymine was always the same
DNA was responsible for heredity

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DNA Structure and Replication
DNA polymerases I also has

5'-3' endonuclease activity
both (a) and (b)
5'-3' exonuclease activity
3'-5'exonuclease activity

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

DNA helicases
single stranded binding proteins
ligase
DNA topoisomerase

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

All of these
3' → 5' exonuclease
5' → 3' polymerase
5' → 3' exonuclease

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DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Dispersive theory
Evolutionary theory
Semi-conservative theory
Conservative theory

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