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DNA Structure and Replication

DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase
restriction endonuclease
transposase
reverse transcriptase

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DNA Structure and Replication
Reverse transcriptase produces

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

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

30%
Guanine residue can not be calculated
15%
60%

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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?

Semi-conservative theory
Conservative theory
Evolutionary theory
Dispersive theory

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DNA Structure and Replication
The role of primase is to

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

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAb, DNA polymerase
Single stranded protein, DNAa
DNAa, gyrase
DNAb, gyrase

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