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DNA Structure and Replication

DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

both (a) and (b)
reverse transcriptase
RNA polymerase
primase

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DNA Structure and Replication
E.coli DNA polymerases II and III lack

partially 5' → 3' endonuclease activity
5' → 3' exonuclease activity
partially 5' → 3' exonuclease activity
5' → 3' endonuclease activity

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DNA Structure and Replication
The most common liquid volumes in molecular biology are measured in

ml
μl
1
nl

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

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

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Formation of thymine dimers
Single strand break
Dehydration
Depurination

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DNA Structure and Replication
Okazaki fragments occur during

replication
synthesis
transformation
polymerase reaction

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