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DNA is, as you say, "unzipped" is a complex process. DNA usually unwinds either to replicate DNA or synthesize mRNA to make proteins. I'll use DNA replication as the example. when the process starts, it will start at hundreds of sites along the length of the DNA molecule. once started the replication will proceed in both directions. DNA helicase is the enzyme that opens the two strands, and the enzyme topoisomerase is before helicase to make sure no tension builds up as the strands unwind. after topoisomerase runs down the length, closely followed by helicase, binding proteins stick to the newly opened nucleotides to prevent the strands from sticking together. that's the first basic step of DNA replication and basically answers your question. Helicase opens it, but remember it must be triggered by a enzyme of protein in order for it to start, and then continues until the molecule is finished.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe original strand of DNA is unzipped by an enzyme that breaks the hydrogen bonds between the bases. This process continues until the entire strand of DNA has been unzipped and copied.
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The location where the DNA molecule becomes unzipped is called?
replication fork :)
The enzyme that adds new nucleotides to each side of a replicating DNA molecule is?
DNA polymerase 1,2,3 are enzymes involved in adding nucleotides during replication
What attaches free nucleotides to the growing DNA strand?
During DNA replication, DNA polymerase binds free DNA nucleotides to an unzipped DNA strand. During transcription, RNA polymerase binds free RNA nucleotides to the unzipped anti-sense DNA strand.
How many strands of RNA are transcribed from the two unzipped strands of DNA?
One
A characteristic of a DNA molecule that is not a characteristic of a protein molecule is that the DNA molecule?
A characteristic of a DNA molecule that is not characteristic of a protein molecule is that the DNA molecule can replicate itself.
The location where the DNA molecule becomes unzipped is called?
replication fork :)
What determines where on the DNA molecule transcription begins and ends?
An RNA primer will attach to the unzipped DNA molecule signaling the beginning of transcription and transcription will occur until the DNA molecule is completely copied (the end is when there is no more DNA molecule to replicate).
What part of the DNA molecule is unzipped?
The hydrogen bonds connecting the nucleotide bases are broken so right down the center is where is is split for DNA Replication or Transcription.
What unzipped DNA?
helicase.! sukkerz.!
What name is given to the group of proteins that bind to the unzipped DNA to keep the DNA bases from re-bonding once they have unzipped?
The mRNA strand!
When DNA is unzipped during replication the older stands of DNA are called?
Templates.
The enzyme that adds new nucleotides to each side of a replicating DNA molecule is?
DNA polymerase 1,2,3 are enzymes involved in adding nucleotides during replication
What attaches free nucleotides to the growing DNA strand?
During DNA replication, DNA polymerase binds free DNA nucleotides to an unzipped DNA strand. During transcription, RNA polymerase binds free RNA nucleotides to the unzipped anti-sense DNA strand.
How many strands of RNA are transcribed from the two unzipped strands of DNA?
One
What does DNA polymerase in DNA replication do?
DNA polymerase attaches (polymerizes) nucleotides together to make polynucleotides using a strand of DNA that has already been unzipped by DNA helicase.
Does a molecule have DNA?
DNA is a molecule so no.
A characteristic of a DNA molecule that is not a characteristic of a protein molecule is that the DNA molecule?
A characteristic of a DNA molecule that is not characteristic of a protein molecule is that the DNA molecule can replicate itself.
