Question

Ques. What is nucleous?
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Answer 1

Nucleus : Robert brown in 1831 discovered the nucleus in the cell. Nucleus the largest cell structure. It is a spherical or oval prominent structure usually located in the centre of the cell

Nucleus has the following important parts:

$(i)$ Nuclear membrane : it is a double layer membrane, which separates the nucleus

from cytoplasm. it has pores called nuclear pores, which allow the transfer of material from inside the nucleus to cytoplasm.

$(ii)$ Nucleoplasm: it is a homogeneous and granular dance fluid present inside the nucleus, in which chromatin and nucleolus are suspended.

$(iii)$ Chromatin material: it consists of long, cold network of thread like structures. the the chromatin material is made up of deoxyribonucleic acid that is DNA which is responsible for storing and transmitting the hereditary information from one generation to the other. it condenses into compact road like body is called chromosomes at the time of the cell division.

$(iv)$ Nucleolus: it is more or less round structure found inside the nucleus. the nucleus contains RNA (ribonucleic acid), RNA is helpful in protein synthesis in the cytoplasm.

Answer 2

Answer:

The central part of an atom or cells is called a nucleolus.

This organalee has two major functions:

it's stores the cells hereditary material, or DNA, and it's coordinates the cells activity, which includes growth, intermiadary metabolism, protein synthesis, and reproduction (cell division). Only the cell of advantages organism, known as eukaryotes, have the nucleolus.

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