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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
Differentiate between Euchromatin and Heterochromatin.
Short Answer Question:
Write a short note on DNA packaging in the eukaryotic cell.
Explain the formation of a nucleosome.
The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called ______.
Which of the following is correct about mature RNA in eukaryotes?
Which of the following amino acid residues will constitute the histone core?
The most abundant prokaryotes helpful to human in making curd from milk and in the production of antibiotics are the ones categorised as ______ .
Total ATP production during EMP pathway is ______.
Who among the following has developed technique to synthesize artificial mRNA with known repeated sequences of two or three nucleotides?
Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.
Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.
In the light of the above statements, choose the correct answer from the options given below:
