nucelul

Nucleolus is a small, dense region found within the nucleus of eukaryotic cells. It is often visible as a dark stain in the nucleus when cells are examined under a microscope. The nucleolus is primarily composed of ribonucleoprotein particles (RNPs) and is involved in the synthesis and processing of ribosomal RNA (rRNA). Ribosomes, which are essential for protein synthesis, are assembled in the nucleolus. The nucleolus plays a crucial role in cell growth, division, and differentiation. Its structure and function can be influenced by various factors, including cell type, stage of cell cycle, and environmental conditions. The nucleolus is not present in prokaryotic cells, as these cells lack a true nucleus.