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DNA Structure and Replication

DNA Structure and Replication
An RNA primer is synthesized by

ligase
DNA helicases
primase
DNA topoisomerase

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DNA Structure and Replication
DNA helicase is used to

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

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DNA Structure and Replication
DNA replication takes place in which direction?

5 'to 3'
3' to 5'
Vary from organism to organism
Randomly

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

ligase
single stranded binding proteins
DNA helicases
DNA topoisomerase

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

covalent bonds between the pair of bases
hydrogen bonds between the pair of bases
ionic bonds between the pair of bases
None of these

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

70 °C
100 °C
90 °C
60°C

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