Here's a breakdown:
* Ribosomal RNA (rRNA) synthesis: The nucleolus contains the genes that code for rRNA. These genes are transcribed, and the resulting rRNA molecules are processed and modified.
* Ribosomal protein synthesis: Ribosomal proteins are synthesized in the cytoplasm and then transported into the nucleolus.
* Assembly: Within the nucleolus, the rRNA and ribosomal proteins associate with each other to form the two subunits of the ribosome: the small subunit (40S in eukaryotes) and the large subunit (60S in eukaryotes).
* Export: Once assembled, the ribosomal subunits are exported from the nucleus to the cytoplasm, where they can participate in protein synthesis.
Let me know if you'd like more details on any specific aspect of ribosome assembly!
