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DNA Structure and Replication

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

Primase
Telomerase
DNA polymerase
DNA ligase

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DNA Structure and Replication
The nucleosome consists of histone

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

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

70 to 90°C
50 to 60°C
80 to l00°C
60 to 80°C

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DNA Structure and Replication
DNA helicase is used to

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

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DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

Polymerase III
none of these
Polymerase I
Polymerase II

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DNA Structure and Replication
The accepted hypothesis for DNA replication is

semi-conservative theory
dispersive theory
evolutionary theory
conservative theory

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