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DNA Replication by enzymes that copy DNA for chromosomes in the new cell after cell division (mitosis)
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∙ 14y ago
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What must happen to DNA strands before transcription can begin?
DNA strands must unwind and the two strands must separate prior to transcription beginning. Once transcription is complete, the two strands join back together.
What causes two strands of DNA to split?
The answer depends on the circumstances! In a cell, during DNA replication or during translation, the two strands in a DNA molecule are separated by enzymes called topoisomerases and helicases. In a solution, the two strands of a DNA molecule can be separated by being heated. This is called DNA melting. See: http://en.wikipedia.org/wiki/DNA http://en.wikipedia.org/wiki/DNA_melting
What property of DNA makes it possible for a probe to find a single-stranded DNA target gene?
a DNA molecule has two paired strands. ~
Which best describes the structure of a DNA molecule-?
a double helix- apex
How can you compare DNA to a zipper?
During the processes of DNA replication and transcription, the two strands of the DNA molecule separate, or "unzip", so that the two strands can be copied by DNA nucleotides, or the anti-sense strand of DNA can be transcribed by mRNA.
What must happen to DNA strands before transcription can begin?
DNA strands must unwind and the two strands must separate prior to transcription beginning. Once transcription is complete, the two strands join back together.
Which is the function of the DNA helicase enzymes in the DNA replication process?
DNA helicase "unzip," or separate, a strand of DNA at positions called origins. This means that the hydrogen bonds between complementary base pairs are removed (DNA is double stranded!). When they separate double-stranded DNA into single strands, it allows each strand to be copied (replication). DNA helicases use the energy stored in a molecule called ATP to break the bonds, which serves as the energy currency of cells.
How many stands are in DNA?
DNA is double-stranded, unless it has been denatured, then the two strands separate, forming two single-stranded molecules.
What are the two strands DNA held by?
The two strands of DNA are connected by hydrogen bonds.
What causes two strands of DNA to split?
The answer depends on the circumstances! In a cell, during DNA replication or during translation, the two strands in a DNA molecule are separated by enzymes called topoisomerases and helicases. In a solution, the two strands of a DNA molecule can be separated by being heated. This is called DNA melting. See: http://en.wikipedia.org/wiki/DNA http://en.wikipedia.org/wiki/DNA_melting
What are the two strands of a chromosome called?
The two identical strands of a chromosome are called chromatids. DNA replication occurs in the interphase stage of the cell cycle.
What are the two single strands of DNA?
The strand used as a template for mRNA during transcription is called the antisense strand. The DNA strand not used as a template is called the sense strand.Read more: What_are_the_two_DNA_strands
What is the role of heat in DNA extraction?
Heat anneals DNA strand i.e. separate two strands of DNA to build anti-codon to desired DNA strand
What is a y-shahped point that results when the two strands of a DNA doble helix separate so that the DNA moecule can be replicated?
Replication Fork
Why must two strands of parental DNA separate?
in order to replicate to create more DNA. this is required in order to make more cells
What property of DNA makes it possible for a probe to find a single-stranded DNA target gene?
a DNA molecule has two paired strands. ~
What chemical force must be overcome in order to separate the two DNA strands during replication?
h bond
