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DNA Structure and Replication

DNA Structure and Replication
The nucleosome consists of histone

octamer and 146 bp of DNA
tetramer and 146 bp of DNA
hexamer and 146 bp of DNA
None of these

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

60°C
90 °C
70 °C
100 °C

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DNA Structure and Replication
DNA helicase is used to

None of these
interact the double helix closely
unwind the double helix
break a phosphodiester bond in DNA strand

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

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

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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%?

Remains same
Decreases
Increases
Can not be compared

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

Helicase
Primase
DNA ligase
DNA polymerase

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