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DNA Structure and Replication

DNA Structure and Replication
Okazaki fragments occur during

transformation
synthesis
polymerase reaction
replication

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

Helicase
DNA polymerase
DNA ligase
Primase

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DNA Structure and Replication
The DNA polymerase in bacteria, responsible for DNA synthesis is

Polymerase I
all of these
Polymerase II
Polymerase III

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Decreases
Increases
Remains same
Can not be compared

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One light and one medium band
One medium and one heavy band
One light, one medium and one heavy band
One medium band

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

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

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