मराठी

Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.

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प्रश्न

Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.

स्पष्ट करा
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उत्तर

In prokaryotes like E. coli, the DNA is not scattered throughout the cell despite the absence of a defined nucleus. Because DNA is negatively charged, it is held by certain positively charged proteins within a specific region called the ‘nucleoid’. In this nucleoid region, the DNA is organised into large loops that are stabilised by these proteins.
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पाठ 5: Molecular Basis of Inheritance - HIGHER ORDER THINKING SKILLS QUESTIONS (HOTS) [पृष्ठ २७६]

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नूतन Biology [English] Class 12 ISC
पाठ 5 Molecular Basis of Inheritance
HIGHER ORDER THINKING SKILLS QUESTIONS (HOTS) | Q 12. | पृष्ठ २७६

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संबंधित प्रश्‍न

Describe the structure of a nucleosome.


Short Answer Question:

Write a short note on DNA packaging in the eukaryotic cell.


Find the odd one out:


Write a note on the packaging of DNA in prokaryotes.


Repeating units of chromatin are known as ____________.


A typical nucleosome "bead" is made up of ______.


The length of DNA can be calculated by ______.


The chromatin is packed to form a solenoid structure of ______ diameter.


Find out the wrong statement about heterochromatin.


Which of the following is correct about mature RNA in eukaryotes?


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? 


Plasmid has been used as vector because ______. 


Which process occurs in the regulation of gene expression in prokaryotes but does not occur in the regulation of gene expression in eukaryotes?


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.


The most abundant prokaryotes helpful to human in making curd from milk and in the production of antibiotics are the ones categorised as ______ .


Replication of DNA in eukaryotes is initiated by ______.


Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.


Total ATP production during EMP pathway is ______.


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