What is the definition of nucleolous?

The nucleolus is a non-membrane-bound structure found within the nucleus of eukaryotic cells. It is the site of ribosome biogenesis, where ribosomal RNA (rRNA) is transcribed and assembled with ribosomal proteins to form the ribosomal subunits.

Here are some key characteristics of the nucleolus:

* Structure: It is not enclosed by a membrane but instead appears as a dense region within the nucleus.

* Function: Its primary function is the synthesis and assembly of ribosomes, which are essential for protein synthesis.

* Composition: It contains rRNA genes, ribosomal proteins, and various enzymes involved in rRNA processing and ribosome assembly.

* Dynamic: The nucleolus is dynamic and can change in size and shape depending on the cell's activity and protein synthesis needs.

In summary: The nucleolus is a crucial component of the nucleus that plays a vital role in ribosome production, ultimately supporting protein synthesis and cellular function.