Here's why:
* Ribosomes are essential for protein synthesis. They read the genetic code from messenger RNA (mRNA) and use it to assemble amino acids into proteins.
* The nucleolus is a dense region within the nucleus of eukaryotic cells. It is responsible for producing ribosomal RNA (rRNA), which is a key component of ribosomes.
* Within the nucleolus, rRNA is assembled with proteins imported from the cytoplasm to form the two subunits of a ribosome. These subunits are then transported out of the nucleus into the cytoplasm, where they can assemble and begin protein synthesis.
