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DNA Structure and Replication

DNA Structure and Replication
The 5' and 3' numbers are related to the

the number of phosphates
carbon number in sugar
length of the DNA strand
the base pair rule

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DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Dispersive theory
Semi-conservative theory
Conservative theory
Evolutionary theory

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DNA Structure and Replication
E.coli DNA polymerases II and III lack

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

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

ligase
single stranded binding proteins
DNA helicases
DNA topoisomerase

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

TFIID
zinc finger
helix-turn-helix
bZIP

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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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