Eukaryotic cells are characterized by prominent nuclear and membrane-bound organelles that perform various cellular functions.
Eukaryotic cells lie in the range of 5-10 micrometers.
However, the smallest discovered eukaryotic cell is Ostreococcus tauri, a free-living unicellular alga that is about 0.8 micrometer while the largest eukaryotic cell can be a neuron that can be as long as 100 centimeters.