Prokaryotes - Ribosomes and Inclusion Bodies
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Description:
Ribosomes
Ribosomes are associated with the plasma membrane of the cell.
They are of 70S type and are made up to two subunits 50S and 30S. The S stands for Svedberg unit which is a measure of the sedimentation coefficient.
Robosomes are the sites of protein synthesis. They translate the mRNA into proteins.
At times several ribosomes remain attached to a single mRNA and form a chain. These type of ribosomes are called polyribosomes or polysome.
Inclusion Bodies
Inclusion bodies are a form to store reserve materials in prokaryotic cells.
They are not membrane bound and remain fee in the cytoplasm.
Eg: phosphate granules, cyanophycean granules and glycogen granules.
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