region of the cell. The genome is organized DNA in a prokaryotic cell is localiz
ID: 101051 • Letter: R
Question
region of the cell. The genome is organized DNA in a prokaryotic cell is localized in the into package the DNA. The exception to this is hyperthermophilic bacteria which use super-coiling to produce a more stable, tightly packeged, molecule of DNA capable of surviving higher temperatures. The which experience super-coiling to tightly super-coilina to tightly of the genome are anchored by so that if one region of the genome is unwound due to damage, only that domain is damaged. The enzyme introducing a double-strand break in the DNA. This enzyme also relaxes DNA supercoils introduced during DNA synthesis by the enzyme , also known as Topoisomerase ll, creates negative supercoils byExplanation / Answer
Answer:
DNA in a prokaryotic cell is located in the Nucleoid region of the cell. The genome is organized into domains which experiences negative super coiling to lightly package the DNA. The exception to this is hyperthermophilic bacteria which use positive supercoiling to produce a more stable, tightly packaged, molecule of DNA capable of surviving higher temperatures. The domains of the genome are anchored by histone-like proteins , so that if one region of the genome is unwound due to damage, only that domain is damaged.
The enzyme DNA gyrase ,also known as Topoisomerase II, creates negative supercoil by introducing a double-strand break in the DNA. This enzyme also releases DNA supercoils introduced during DNA synthesis by the enyzme helicase.
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