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DNA Structure and Replication

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

DNA topoisomerase
single stranded binding proteins
ligase
DNA helicases

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DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

Polymerase I
Polymerase III
Polymerase II
none of these

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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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DNA Structure and Replication
30 nm wide helix with five or six nucleosomes per helix is known as

kinoplast
solenoid
halonoid
none of these

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DNA Structure and Replication
What is the approximate size (in kb) of the E. coli genome?

4500 kilobase
5500 kilobase
6500 kilobase
3000 kilobase

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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
Conservative theory
Semi-conservative theory

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