Class 11 Biology Cell : The Unit of Life Ribosomes


  • Ribosomes are the granular structures composed of ribonucleic acid (RNA) and proteins.
  • The eukaryotic ribosomes are 80S, while the prokaryotic ribosomes are 70S, made up of two subunits.
  • ‘S’ stands for the sedimentation coefficient, which is indirectly is a measure of density and size.


Fig. Ribosomes

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