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DNA Structure and Replication

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

Primase
DNA polymerase
Helicase
DNA ligase

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DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

nickase activity
no activity
exonuclease activity
endonuclease activity

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DNA Structure and Replication
TM refers to the temperature at which

50% of a DNA molecule is denatured
50% of a protein molecules are denatured
All of these
membranes are 50% fluid

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One medium band
One light and one medium band
One light, one medium and one heavy band

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DNA Structure and Replication
Which will require a higher temperature to denature?

RNA with a high G-C content
RNA with a high A-T content
DNA with a high G-C content
DNA with a high A-T content

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DNA Structure and Replication
DNA can be sequenced by the

chain termination procedure
physical method
both (a) and (b)
chemical method

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