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DNA Structure and Replication

DNA Structure and Replication
The DNA is negatively super coiled, complexes to histone,

HSP-1
All of these
H-NS
HU

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

all of these
with 14N-containing DNA
above DNA containing 14N
below DNA containing 14N

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DNA Structure and Replication
TM refers to the temperature at which

All of these
membranes are 50% fluid
50% of a protein molecules are denatured
50% of a DNA molecule is denatured

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DNA Structure and Replication
E.coli DNA polymerases II and III lack

partially 5' → 3' endonuclease activity
partially 5' → 3' exonuclease activity
5' → 3' endonuclease activity
5' → 3' exonuclease activity

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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?

Semi-conservative theory
Conservative theory
Dispersive theory
Evolutionary theory

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase II
none of these
Polymerase I
Polymerase III

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MORE MCQ ON DNA Structure and Replication

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