Here's a breakdown:
* Nucleolus: A dense region within the nucleus of a cell.
* Ribonucleic acid (RNA): A type of nucleic acid essential for protein synthesis.
* Ribosomes: Cellular structures responsible for protein synthesis.
The nucleolus is the site of ribosome biogenesis. It produces ribosomal RNA (rRNA) and assembles it with proteins to create ribosomal subunits. These subunits then move out of the nucleus and into the cytoplasm, where they combine to form functional ribosomes.
