Prokaryotic vs Eukaryotic Cells

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What are the two domains of life that prokaryotes are a part of?

Bacteria and archaea

How much bigger are eukaryotic cells compared to prokaryotic cells?

About fifteen times as big

What is the main distinguishing feature of eukaryotes compared to prokaryotes?

The presence of membrane-bound organelles

Study Notes

  • Prokaryotes are single-celled organisms that lack a nucleus, but a nucleoid region is still present.
  • Prokaryotes include bacteria and archaea, two of the three domains of life.
  • Prokaryotic cells were the first form of life on Earth, characterized by having vital biological processes including cell signaling.
  • Plants, animals, fungi, slime moulds, protozoa, and algae are all eukaryotic.
  • Eukaryotic cells are about fifteen times wider than a typical prokaryote and can be as much as a thousand times greater in volume.
  • The main distinguishing feature of eukaryotes as compared to prokaryotes is compartmentalization: the presence of membrane-bound organelles (compartments) in which specific activities take place.

Test your knowledge about the differences between prokaryotic and eukaryotic cells, including their characteristics and biological significance.

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