Circovirus information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues.
Member of the American Chemical Society (ACS). Nucleolus is where ribosomes are assembled. The nucleolus is also in charge of transcribing and modifying rRNA. However the nucleolus is not an organelle but a space in the nucleus which is actively producing ribosome units.he nucleolus is also in charge of transcribing and modifying rRNA. However the nucleolus is not an organelle but a space in the nucleus which is actively producing ribosome units.
Ribosomes build a cellâs proteins. 1  Ribosomes, containing rRNA and protein, are the organelles that carry out protein synthesis. 2  Cell types that synthesize large quantities of proteins (e.g., pancreas cells) have large numbers of ribosomes and prominent nucleoli.