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DNA Structure and Replication

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

strandase
helicase
DNA polymerase
none of these

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DNA Structure and Replication
DNA helicase is used to

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

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DNA Structure and Replication
Which is the largest among the followings?

Carbon
Nitrogenous base
Phosphate
Nucleotide

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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

high temperature and Mg++
high temperature and Ca++
low temperature and Ca++
low temperature and Mg++

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DNA Structure and Replication
Okazaki fragments occur on the __________ and are bonded together by __________

Lagging strand, ligase
mRNA, anticodons
Leading strand, polymerase
tRNA, polymerase

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MORE MCQ ON DNA Structure and Replication

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