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DNA Structure and Replication

DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

helicase
none of these
DNA polymerase
strandase

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DNA Structure and Replication
Each replication bubbles consists of

4 replication forks
3 replication forks
1 replication forks
2 replication forks

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DNA Structure and Replication
Which of the following enzyme adds complementary bases during replication?

Synthesase
Polymerase
Replicase
Helicase

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

None of these
synthesis in the 5'-3' direction
utilization the same enzyme
incorporation of deoxynucleotides

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

One
Three
Two
A smear

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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%?

Can not be compared
Remains same
Increases
Decreases

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