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DNA Structure and Replication

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
E.coli DNA polymerases II and III lack

5' → 3' exonuclease activity
partially 5' → 3' exonuclease activity
partially 5' → 3' endonuclease activity
5' → 3' endonuclease activity

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

60%
Guanine residue can not be calculated
15%
30%

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

density
resorption
adhesion
absorption

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

DNA topoisomerase
DNA helicases
ligase
single stranded binding proteins

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DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

both (a) and (b)
RNA polymerase
reverse transcriptase
primase

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