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DNA Structure and Replication

DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

nickase activity
no activity
endonuclease activity
exonuclease activity

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Two
One
A smear
Three

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

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

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

Bleomycin
Erythromycin
All of these
Tunicamycin

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

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

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

70 to 90°C
50 to 60°C
60 to 80°C
80 to l00°C

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