The part of a cell that makes ribosomes is called the nucleolus. This structure is located within the nucleus and is primarily responsible for synthesizing ribosomal RNA (rRNA) and assembling ribosomal subunits.
The nucleolus functions like a factory. It takes the genetic instructions from DNA and uses them to produce rRNA, which is a crucial component of ribosomes. Once the rRNA is produced, it combines with proteins that are also made in the cell to form the two subunits of a ribosome.
These ribosomal subunits are then transported out of the nucleus into the cytoplasm, where they play a crucial role in protein synthesis by providing a site for the translation of messenger RNA (mRNA) into proteins. Therefore, the nucleolus is essential for the production of ribosomes, which are vital for the cell’s ability to create proteins necessary for life.