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प्रश्न
Explain the role of histones in forming a nucleosome.
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उत्तर
(i) Histones are positively charged basic proteins which are organised to form a unit of eight molecules called histone octamer.
(ii) Histones are rich in the basic amino acids residues lysines and arginines which carry positive charges in their side chains.
(iii) The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome.
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संबंधित प्रश्न
How are the following formed and involved in DNA packaging in a nucleus of a cell?
(ii) Nucleosome
(iii) Chromatin
Draw a neat and labelled diagram of the Nucleosome.
Which of the following is the CORRECT statement with respect to formation of nucleosome?
In prokaryotes, the enzyme RNA polymerase recognizes the promoter by its ______.
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?
Which one of the following cell organelle is considered as ‘Cell within a cell’?
Plasmid has been used as vector because ______.
What do the 'beads on strings' structure of DNA packaging represent?
Total ATP production during EMP pathway is ______.
Define the Transfection.
