SCIENCE
Two Basic Types of Cells

All cells fall into one of the two major classifications: prokaryotes or eukaryotes.
Prokaryotic Cells
Pro = “before”, karyon = “nucleus”
Prokaryotes are evolutionarily ancient. They were here first and for billions of years were the only form of life. And even with the evolution of more complex eukaryotic cells, prokaryotes are supremely successful. All bacteria and bacteria-like Archaea are prokaryotic organisms.
All organisms are composed of one or more cells.
Cells are the basic unit of structure and function in organisms.
All cells come only from other cells.
Eukaryotic Cells
Eu = “true”, karyon = “nucleus”
Eukaryotic cells are more complex, evolving from a prokaryote-like predecessor. Most of the living things that we are typically familiar with are composed of eukaryotic cells; animals, plants, fungi and protists. Eukaryotic organisms can either be single-celled or multi-celled.