Where is ribosome production primarily located in a cell?

Ribosome production primarily takes place in the nucleoli, which are specialized structures within the nucleus of eukaryotic cells. The nucleolus is where the essential components necessary for ribosome assembly, such as ribosomal RNA (rRNA) and proteins, are synthesized and combined. Once the ribosomal subunits are assembled in the nucleolus, they are then transported out into the cytoplasm where they combine to form functional ribosomes, facilitating protein synthesis. This localization is critical, as the nucleolus serves as a hub for managing the synthesis and processing of rRNA, which is a key component of ribosomes.