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DNA Structure and Replication

DNA Structure and Replication
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

semiconservative
mutational
antiparallel
discontinuous

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DNA Structure and Replication
Which of the following enzyme adds complementary bases during replication?

Synthesase
Polymerase
Helicase
Replicase

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

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

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DNA Structure and Replication
DNA helicase is used to

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

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DNA Structure and Replication
What is the approximate percentage of repetitive DNA sequences in human DNA?

30 to 40%
20 to 30%
40 to 50%
10 to 20%

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DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

All of these
Tunicamycin
Bleomycin
Erythromycin

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