What is a Nucleus of a Cell ? Write a short Note

Nucleus

Definition:

A nucleus of a cell is referred to as a double membraned eukaryotic cell organelle that contains a genetic material and is only found in eukaryotes.

Discovery:

Nucleus was discovered by Robert Brown in 1831.

Structure:

• Nucleus is engirdled by a structure referred to as the nuclear envelope.
• The membrane distinguishes the cytoplasm from the entire content of the nucleus.
• The chromosomes of the cells are also confined within it.
• Chromosomes are having the presence of DNA which provides the genetic information.
• The nucleus is suspended in the cytoplasm in the middle of the cell.

Distribution: 

• Uninucleate cell~Contains a single nucleus.
• Bi-nucleate cell~Contains two nuclei at a time.
• Multinucleate cells~Contains more than two nuclei at a time.
• Enucleate cells~No nucleus.

Functions Of Nucleus of a Cell :

• Nucleus contains the hereditary information of the cells.
• Controls the cell’s growth and reproduction.
• Nucleus is the home of some important cellular processes.
• DNA Replication is possible in the nucleus as well.
• The nucleus is also the site of transcription. 

Diagram of Nuceus of a Cell

Also Check – 5 Important Functions of Nucleus

Also Chekc – Nucleus- Definition , Structure, Characteristics and Functions