Nucleus

Nucleus:-

 

Explanation:

                The nucleus is a highly specialized cell organelle which controls all the activities in a cell. It is the brain of a cell. It is round or oval in outline and processes four parts.It is often said as cell organizer.You can get a clear idea about nucleus from the picture below:

Nucleus

 

Parts:

• Nuclear membrane
• Nucleoplasm
• Chromatin Reticulum
• Nucleolus

Nuclear Membrane:

 

                    The nuclear membrane is the outer delicate covering of the nucleus. It contains pores of different dimensions.

Nucleoplasm:

 

                 The nucleoplasm also known as nuclear sap is the protoplasmic substance of the nucleus.

Chromatin Reticulum:

 

                Chromatin Reticulum is composed of a network with highly elongated threads.

Functions:

• It controls all metabolic processes and hereditary activities of the cell.
• The nuclear membrane allows exchange of ions between the nucleoplasm and the cytoplasm.