A cellular structure containing genetic material in the form of DNA.

Genetic material in the form of DNA is found in the nucleus. The nucleus is perhaps the most important structure within animal and plant cells. It is the main control center of the cell and acts like the brain of the cell. Only eukaryotic cells have a nucleus. In fact, the definition of a eukaryotic cell is that it contains a nucleus, whereas a prokaryotic cell is defined as having no nucleus. Most cells have only one nucleus. However, there are some cells that develop with more than one nucleus.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.