Certain parts of the brain govern specific functions. For example, the cerebellum is involved with coordination; the hippocampus with memory. Nerve cells (neurons) are the basic unit of communication in the brain.
Eukaryotic organisms use mitosis to reproduce sexually. In mitosis, the parent cell is divided into two daughter cells which be identical to the parent cell. Edit
A: Mitosis occurs in the cell nuclei of eukaryotic cells that are not related to reproduction, while meiosis takes place in the cell nuclei of eukaryotic cells that are related to reproduction. Cells not associated with reproduction are called somatic cells, and cells associated with reproduction are known as gamete cells.