Nucleus:

In this writing am going to give you some knowledge on nucleus. Lets start with definition of nucleus: Nucleus is the brain of cell which controls and monitors the function of cell. It contains most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes.

The following is the Nu cleus Structure , functions and its parts:
The nucleus consists of the nuclear envelope, nucleolus, chromatin, and nucleoplasm.
1.     Nuclear Envelope; Structure -two unit membranes with a fluid-filled space
                                -nuclear pores present
                                -outer membrane may be continuous with endoplasmic
                                  reticulum
2.     Chromatin; Structure -composed of long thin strands of DNA
3.     Nucleolus; Structure -non-membranous matrix of RNA (ribonucleic acid) and protein