There are roughly a trillion species of microorganisms on Earth—the vast majority of which are bacteria. Bacteria consist of a single cell. They do not have bones and are not like big ...

E. coli is arguably the most well-studied organism on Earth, but scientists have now discovered a new behavior that’s almost never seen in bacteria. The normally single-celled organisms have ...

Most animals require brains to run, jump or hop. The single-celled protozoan Euplotes eurystomus, however, achieves a scurrying walk using a simple, mechanical computer to coordinate its microscopic ...

Scientists have sequenced the complete genome of a roundworm used extensively in biological research, opening a new pathway ...

In a hot spring at Yellowstone National Park, a microbe does something that life shouldn’t be able to do: It breathes oxygen ...

Eukaryotic cells evolved from simpler cells, like bacteria and archaea. The Asgard archaeal phylum is currently thought to be eukaryotes' closest known ancestor. Now researchers have found an enzyme ...

Bacteria aren't the only single-celled organisms in town, however. Archaea are another type of single-celled organism that are known to carry flagella that can also behave like propellers. The ...

The Naegleria fowleri is a free-living amoeba, which is a one-celled organism that thrives in warm fresh water like lakes, ...

Almost all eukaryotic organisms, from plants and animals to fungi, can't survive without mitochondria -- the 'powerhouses of the cell,' which generate chemical energy using oxygen. However, a new ...

“Choanoflagellates don’t have stem cells, they’re single-celled organisms, but they have these genes, likely to control basic cellular processes that multicellular animals probably later ...

Every human, bird, tree, and flower can trace its ancestry across a few billion years back to microscopic, single-celled organisms such as bacteria. That change from micro to macro, ...