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DNA Structure and Replication

DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
no activity
nickase activity
endonuclease activity

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DNA Structure and Replication
What is the approximate size (in kb) of the E. coli genome?

3000 kilobase
6500 kilobase
4500 kilobase
5500 kilobase

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DNA Structure and Replication
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

using enzyme called telomerase
None of these
shortening of the double stranded replicated portion
using RNA as a template

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DNA Structure and Replication
DNA helicase is used to

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

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

ml
nl
μl
1

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

transposase
restriction endonuclease
reverse transcriptase
helicase

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