What is the function of a nucleuous?

The nucleolus is a prominent substructure within the nucleus of eukaryotic cells, primarily responsible for the synthesis and assembly of ribosomal RNA (rRNA) and ribosomal subunits. It plays a crucial role in the production of ribosomes, which are essential for protein synthesis. The nucleolus also participates in the regulation of the cell cycle and stress responses. Overall, it is vital for maintaining cellular function and protein production.