Nucleolus facts for kids
A nucleolus (plural: nucleoli) is considered the brain of the cell nucleus. It is made up of RNA and protein. It is the part that puts ribosomes together. The ribosomes then travel out through the nuclear envelope to the cytoplasm, where they do their work, which is to make new proteins.
There is a special area in the nucleus of a cell where the nucleoli form called the nucleolus organizer region (NOR). Seen under a microscope, the nucleolus is a dark spot inside the cell's nucleus. It helps keep the shape of the nucleus.
In Spanish: Nucléolo para niños
Nucleolus Facts for Kids. Kiddle Encyclopedia.