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DNA Structure and Replication

DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

B
S
None of these
H

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DNA Structure and Replication
The role of primase is to

cleave and unwinds short sections of DNA ahead of the replication fork
dismantle RNA primer
synthesize an RNA primer to begin the elongation process
proofread base pairing

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DNA Structure and Replication
What is the approximate size (in kb) of the E. coli genome?

5500 kilobase
4500 kilobase
6500 kilobase
3000 kilobase

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DNA Structure and Replication
Reverse transcriptase produces

RNA from RNA
DNA from RNA
RNA from DNA
DNA from peptides

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

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

helicase
primase
DNA polymerase
DNA ligase

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