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DNA Structure and Replication

DNA Structure and Replication
An RNA primer is synthesized by

ligase
DNA topoisomerase
DNA helicases
primase

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DNA Structure and Replication
DNA polymerases I also has

5'-3' exonuclease activity
3'-5'exonuclease activity
both (a) and (b)
5'-3' endonuclease activity

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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
reverse transcriptase
restriction endonuclease
helicase

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DNA Structure and Replication
The size of a linear DNA fragment in a gel can be estimated by

the sedimentation coefficient
comparison with a molecular weight standard such as Hind III digested phage lambda
fluorescence in UV light
the time it takes the gel to run

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DNA Structure and Replication
A cesium chloride will separate DNA molecules by

resorption
absorption
adhesion
density

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

utilization the same enzyme
synthesis in the 5'-3' direction
incorporation of deoxynucleotides
None of these

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