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The hydrogen bonds connecting the nucleotide bases are broken so right down the center is where is is split for DNA Replication or Transcription.

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14y ago
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12y ago

molecule unwinds

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Q: What part of the DNA molecule is unzipped?
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Related questions

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).


Which job must enzymes do before replication can begin?

They must unwind part of the original DNA molecule.


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!


What part of DNA is found at the centre of the molecule?

phosphate molecule


How is a DNA molecule unzipped?

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.


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 part of the nucleotide make up the backbone of the DNA molecule?

dna strands


Are phosphate groups part of a DNA molecule?

Yes


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.