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DNA Structure and Replication

DNA Structure and Replication
The site on a bacterial chromosome that marks the initiation point for chromosome replication is called

Pro
Ori
a promoter
an initiation codon

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DNA Structure and Replication
Proteins which help to open the double helix for DNA synthesis are

DNA helicases
DNA topoisomerase
ligase
single stranded binding proteins

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DNA Structure and Replication
Messelsen and Stahl model of replication was called

conservative replication
Cri du Chat
semi-conservative replication
dispersive replication

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

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

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DNA Structure and Replication
What does ligase do during replication of DNA?

Makes copies of mRNA from DNA
Digests mRNA when it is no longer needed
Joins nicks in DNA strands
Synthesizes the lagging strand

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DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

TFIID
bZIP
helix-turn-helix
zinc finger

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