Monday, August 15, 2011

Eukaryotic and Prokaryotic cells

       SIMILARITIES;                                                            
  • They are both membrane bound.
  • They both have DNA as their genetic material
  •  They both have ribosomes .
  •  They have similar basic metabolism .
  • They are both amazingly diverse in forms
        DIFERENCES;           
  • eukaryotes have a nucleus, while prokaryotes do not
  • eukaryotes have membrane-bound organelles, while prokaryotes do not. The organelles of eukaryotes allow them to exhibit much higher levels of intracellular division of labor than is possible in prokaryotic cells.
  • Eukaryotic cells are, on average, ten times the size of prokaryotic cells.
  •  The DNA of eukaryotes is much more complex and therefore much more extnsive than the DNA of prokaryotes.
  • Prokaryotes have a cell wall composed of peptidoglycan, a single large polymer of amino acids and sugar . Many types of eukaryotic cells also have cell walls, but none made of peptidoglycan.
  • The DNA of prokaryotes floats freely around the cell; the DNA of eukaryotes is held within its nucleus and associated with histones (proteins)
  •  Eukaryotes undergo mitosis; prokaryotes divide by binary fission (simple cell division)

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