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DNA Structure and Replication

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

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

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

proteins and DNA were responsible for heredity
DNA was responsible for heredity
the ratio of Adenine to thymine was always the same
phage DNA was similar to bacterial DNA

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DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

positive pole
negative pole
will not migrate
none of these

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Single strand break
Formation of thymine dimers
Dehydration
Depurination

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DNA Structure and Replication
The melting of 40-45 bp at the oriC site of E. coli requires

DNA + ATP + HU
DNA+ ATP + HU + DNAb + DNAa
DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme
DNA + ATP + HU + DNAb

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

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

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