Friday, July 3, 2020

Difference between prokaryotic and eukaryotic cell

S.No.
Characteristic
Prokaryotic cell
Eukaryotic cell
        1)       
Size
Small (generally 1-10µm)
Large (generally 10-100µm)
        2)       
Cell membrane
Cell is enveloped by a rigid cell wall
Cell is enveloped by a flexible plasma membrane
         

       3)       
Sub-cellular organelles
Absent
Distinct organelles are found ( Examples – mitochondria, nucleus, lysosomes, ribosomes, endoplasmic reticulum)
      
        4)       
Nucleus
Not well defined; DNA is found as nucleoid, histones are absent  
Nucleus is well defined, surrounded by a membrane; DNA is associated with histones

        5)       
Energy metabolism
Mitochondria absent, enzymes of energy metabolism bound to membrane
Enzymes of energy metabolism are located in mitochondria
         6)       
Cell division
Usually fission and no mitosis
Mitosis

         7)       
Cytoplasm
Organelles and cytoskeleton absent
Contains organelles and cytoskeleton (a network of tubules and filaments)

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