Structure & functions:
→ Are small granules of RNA’s usually occurring in clusters called Polyribosomes.
→ Polyribosomes are attached to one mRNA molecule increasing its rate of polypeptide synthesis.
→ Hence, Ribosomes are “Actual site of Protein Synthesis”.
→ Types: Free Ribosomes (Present in Cytosol); Bound Polyribosome (Present embedded on Rough ER)