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DNA Structure and Replication

DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
no activity
endonuclease activity
nickase activity

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

ligase
single stranded binding proteins
DNA topoisomerase
DNA helicases

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

Primase
DNA ligase
DNA polymerase
Helicase

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

reverse transcriptase
restriction endonuclease
transposase
helicase

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DNA Structure and Replication
Telomeres are usually rich in which nucleotide?

Cytosine
Guanine
Thymine
Adenine

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DNA Structure and Replication
DNA helicase is used to

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

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