By Jack Tamisiea For a creature made up of only a single cell, the stentor is a giant. This trumpet-shaped organism is among the largest unicellular organisms, stretching as long as a sharpened ...

Lacrymaria olor is a single-celled organism, or protist ... swan", after its swan-like neck and tear-shaped body. Read more Largest ever animal may have been Triassic ichthyosaur super-predator ...

An curved arrow pointing right. A single celled organism eating its prey, an inside view of a termite's gut, and a parasite going 'Alien' on its host took top honors in Nikon's Small World in ...

Most prokaryotes are small, single-celled organisms that have a relatively simple structure. Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound ...

3,800 mya: Bacteria diversify Single-celled bacteria are the oldest-known living organisms. Most bacteria reproduce by making carbon copies of themselves through a process called fission.