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प्रश्न
How are the following formed and involved in DNA packaging in a nucleus of a cell?
(ii) Nucleosome
(iii) Chromatin
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उत्तर
(i) Histone octamer: It is a unit consisting of eight molecules of histone proteins (two molecules each of H2A, H2B, H3 and H4 histones). It interacts with the DNA to keep it associated with itself.
(ii) Nucleosome: DNA (negatively charged) winds around the histone octamer (positively charged) to form a nucleosome, which acts as a building block for packaging the DNA into chromatin.
(iii) Chromatin: It is a complex of DNA and proteins. Its main function is to efficiently package the DNA into the nucleus.
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संबंधित प्रश्न
Explain the role of histones in forming a nucleosome.
Write a note on the packaging of DNA in prokaryotes.
Repeating units of chromatin are known as ____________.
Telomere has a unique property of __________.
Nucleosome core is made of ______.
A stretch of euchromatin has 200 nucleosomes. How many bp will there be in the stretch and what would be the length of the typical euchromatin?
Flagella are present both in prokaryotic and eukaryotic cells, however, they differ in:
Histones are rich in ______.
Total ATP production during EMP pathway is ______.
Define the Transfection.
