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DNA Structure and Replication

DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

linking number
none of these
twisting number
helix frequency

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

DNA ligase
helicase
DNA polymerase
primase

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

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

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

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DNA Structure and Replication
Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

Lagging strand
Okazaki fragments
Leading strands
Primers

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DNA Structure and Replication
Each replication bubbles consists of

4 replication forks
3 replication forks
1 replication forks
2 replication forks

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