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DNA Structure and Replication

DNA Structure and Replication
The 5' and 3' numbers are related to the

length of the DNA strand
carbon number in sugar
the number of phosphates
the base pair rule

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DNA Structure and Replication
Enzyme, responsible for proofreading base pairing is

DNA ligase
DNA polymerase
Telomerase
Primase

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DNA Structure and Replication
The melting of 40-45 bp at the oriC site of E. coli requires

DNA + ATP + HU
DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme
DNA + ATP + HU + DNAb
DNA+ ATP + HU + DNAb + DNAa

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DNA Structure and Replication
Okazaki fragments occur during

synthesis
replication
transformation
polymerase reaction

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase II
Polymerase III
Polymerase I
none of these

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

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

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MORE MCQ ON DNA Structure and Replication

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