1. Chromatin: This is the genetic material of the cell, made up of DNA and proteins. It is organized into structures called chromosomes during cell division.

2. Nucleolus: This is a dense region within the nucleus where ribosomes are assembled. Ribosomes are essential for protein synthesis.

3. Nuclear envelope: This is a double membrane that surrounds the nucleus and separates it from the cytoplasm. It has pores that allow for the passage of molecules between the nucleus and the cytoplasm.

4. Nuclear lamina: This is a network of protein filaments that lines the inner surface of the nuclear envelope. It provides structural support for the nucleus and helps regulate the organization of chromatin.

5. Nuclear matrix: This is a network of proteins that fills the space within the nucleus. It helps to organize the chromatin and other nuclear components.

6. Other molecules: The nucleus also contains other molecules, such as enzymes, RNA, and proteins, which are involved in various nuclear functions.

In summary, the cell nucleus is the control center of the cell, containing the genetic material and regulating cellular processes through its components.