Chromatin is made up of :–a)Nucleoproteinb)Nucleosidec)Pentose sugard)Nitrogenous baseCorrect answer is option 'A'. Can you explain this answer?

Question

Chromatin is made up of :&ndash;a)Nucleoproteinb)Nucleosidec)Pentose sugard)Nitrogenous baseCorrect answer is option 'A'. Can you explain this answer?

Answer

In eukaryotes , there is a set of positively charged , basic proteins called history. Histones are organized to form a unit of eight molecules called Histones octamer. The negativity charged, DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome . Nucleosome constitute the repeating unit of a structure in nucleus called chromatin.

Answer

Correct answer is A, because as you know the dna in a cell is so long enough to fit in the nucleus. so the dna is tightly wound and coiled into a thread like structure called the Chromatin. chromatin is made up of two parts i.e. the DNA and a protein complex called the Histones. as the chromatin has both dna and protein it is called a nucleoprotein complex.

Answer

Chromatin is made up of nucleoprotein... The primary functions of chromatin are to pack DNA into smaller volume to fit in the cell, to reinforce the DNA macromolecule to allow mitosis to prevent DNA damage and to control gene expression and DNA replication

Answer

Understanding Chromatin
Chromatin is a complex of DNA and proteins found in the nucleus of eukaryotic cells. Its primary function is to package DNA into a more compact, dense shape, allowing for efficient storage and regulation of gene expression.
Composition of Chromatin
- Nucleoprotein: Chromatin is primarily composed of nucleoproteins, which are complexes of DNA and histone proteins. These proteins play a crucial role in organizing DNA into structural units called nucleosomes.
- Nucleosomes: Each nucleosome consists of a segment of DNA wound around a core of histone proteins. This structure allows the long strands of DNA to be condensed and protected within the nucleus.
Other Components
- Nucleosides: While nucleosides (composed of a nitrogenous base and a sugar) are important components of nucleotides, they are not the primary constituents of chromatin itself.
- Pentose Sugar: The pentose sugar is part of the nucleotides that make up the DNA backbone. However, it does not define chromatin as a whole.
- Nitrogenous Bases: These bases (adenine, thymine, cytosine, and guanine) are crucial for the genetic code but are not the structural components that characterize chromatin.
Conclusion
In summary, the correct option is 'A', nucleoprotein, as chromatin is primarily made up of DNA and histone proteins. Understanding this composition is vital for comprehending the roles chromatin plays in genetics and cellular function.

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