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प्रश्न
The net electric charge on DNA and histones is ______.
विकल्प
negative and positive, respectively
both negative
both positive
zero
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उत्तर
The net electric charge on DNA and histones is negative and positive, respectively.
Explanation:
On DNA and histones, the net electric charge is both negative and positive. The presence of phosphate ions in the nucleotides makes the DNA molecule negatively charged. Because lysine and arginine amino acid residues are present, his tones are positively charged.
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संबंधित प्रश्न
Write a note on the packaging of DNA in Eukaryotes.
Repeating units of chromatin are known as ____________.
In prokaryotes, the enzyme RNA polymerase recognizes the promoter by its ______.
Electron Transport System (ETS) is present in a eukaryotic cell in the:
Histones are rich in ______.
Watson and Crick proposed the 'Double Helix' structure of DNA based on data produced by ______
In an experiment, DNA is treated with a compound which tends to place itself amongst the stacks of nitrogenous base pairs. As a result of which, the distance between two consecutive base increases, from 0.34nm to 0.44 nm. Calculate the length of DNA double helix (which has 2 × 109 bp) in the presence of saturating amount of this compound.
What do the 'beads on strings' structure of DNA packaging represent?
Nucleosomes are the repeating units of chromatin the part between adjacent nucleosomes is called ______ .
Histones are enriched with ______.
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:
What are non-histone chromosomal (NHC) proteins?
What is the approximate diameter of a eukaryotic cell nucleus?
Which of the following correctly describes prokaryotic DNA?
What is the role of topoisomerase I in prokaryotic DNA packaging?
What is the diameter of the nucleosome fibre (beads-on-string structure)?
Describe the hierarchical levels of eukaryotic DNA packaging.
Which of the following correctly represents the basic repeating unit in prokaryotes versus eukaryotes?
