Question

Please explain this question 


Q) In eukaryotic cells the amount of basic proteins is often found to be


(1) More than the amount of DNA

(2) Less than the amount of DNA

(3) Equal to the amount of DNA

(4) None of these  

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Answer 1

In eukaryotic cells the amount of basic proteins is often found to be equal to the amount of DNA.

- All the basic proteins ( histones) are present in large quantity in any eukaryotic cell.

- Around 60 million molecules of particular type are found in every cell.

- Nuclear DNA consists of both the classes of protein complexes in eukaryotic cells which are known as chromatin.

Answer 2

In eukaryotic cells the amount of basic proteins is often found to be (2) Less than the amount of DNA  

Explanation:

Eukaryotic cells are defined as cells that contain organized nuclei and organelles that are surrounded by membrane-bound organelles. Examples of eukaryotic cells are protists, plants, animals,  fungi. Its genetic material is organized into chromosomes.

The discovery that most of the genomes in eukaryotic cells contain not only functional genes but also a large number of DNA sequences that don't code for proteins. The difference in the size of the salamander and the human genomes, therefore, reflects higher amounts of non-coding DNA than more genes in the salamander genome.

The presence of a large number of non-coding sequences is a common property of complex eukaryotic genomes. Therefore, a thousand times the size of the human genome compared to that of E. Coli is not only due to a greater number of human genes. The human genome is thought to contain about 100,000 genes, about 25 times more than E. coli. Therefore, much of the complexity of eukaryotic genomes is the result of the frequency of different types of non-coding sequences that make up the majority of DNA in higher eukaryotic cells.

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