How have eukaryotic cells evolved?

1 Answer
Aug 31, 2015

Unicellular organisms may have developed from procaryotes to increase metabolic efficiency.


  • Unicellular organisms have developed from prokaryotes to increase metabolic efficiency.
  • Eukaryotic cells are more specialised cells within the Protista kingdom. They can be both unicellular and multicellular organisms. They have membrane bound organelles (chloroplast and mitochondria), and a nucleus, which contains long strands of DNA structured in chromosomes.
  • Some of the simple prokaryotic cells may have engulfed other cells which became internal structures or organelles and evolved into first eukaryotic cells.
  • The theory has been popularised by L. Margulis. It is now supported by detailed experimental testing.