what is the function of nuleolus
Answers
Answer:
Explanation:
Function of the Nucleolus
The nucleolus is mainly involved in the production of subunits which then together form ribosomes. Therefore, nucleolus plays an important role in protein synthesis and production of ribosomes in eukaryotic cells.
Structure of the Nucleolus
In eukaryotic cells, nucleolus has a well-ordered structure with four main ultrastructural components. The components can be further identified as:
Fibrillar Centers: It is the place where the ribosomal proteins are formed.
Granular Components: Before ribosomes are formed, these components have rRNA that binds to ribosomal proteins.
Dense Fibrillar Components: It has new transcribed RNA which connects to the ribosomal proteins.
Nucleolar vacuoles: It is present only in Plant cell.
The ultrastructure of the nucleolus can be easily visualized through an electron microscope. The arrangement of the nucleolus within the cell can be clearly studied by the techniques – fluorescent recovery after photobleaching and fluorescent protein tagging.
Nucleolus of several plant species has very high concentrations of iron in contrast to the human and animal cell nucleolus.
the nucleolus makes ribosomal subunits from protein and ribosomal RNA also known as rRNA. it then sends the subunits out to the rest of the cell where they combine into complete ribosomes. Ribisomes make protein ; therefore the nucleolus plays a vital role in making proteins in cells.