Question

Describe the structure and function of nucleus.

Answer 1

Nucleus :

1. The nucleus is the main controlling organelle of the cell.
2. The nucleus is an organelle that is found in eukaryotic cells.

Structure of nucleus :

1. It is large and well organized in structure which controls all the cell activities and called as brain of the cell.
2. The nucleus contains a covering layer called a nuclear envelope which covers all the contents of the nucleus.
3. A nuclear membrane is a selectively permeable membrane.
4. The nucleus contains a dense network of fine fibrous called chromatin.
5. Chromatin is made up of DNA and nuclear proteins.
6. The nucleus contains nucleic acids such as DNA and RNA.
   

Functions of the nucleus :

1. The nucleus is the most important organelle of the cell which controls all the metabolic functions of the cell hence it is called the brain of the cell.
2. The chromatin part of the nucleus possesses all genetic information that is required for the growth and development of an organism, reproduction, metabolism, and behavior.
3. It plays a central role in cellular reproduction.
4. It also controls the chemical activities of the cell for the development and growth of the cell.