Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that ...

But the discovery of the Asgard archaea—the closest prokaryotic relatives to modern eukaryotes—has shifted most researchers away from a three-domain tree in which eukaryotes are a distinct lineage and ...

Prokaryotes are unicellular and lack a nucleus and membrane-bound organelles. They are generally smaller and simpler and include bacteria and archaea. Eukaryotes on the other hand are often ...

Prokaryotes include both bacteria and "archaea", another type of single-celled organism. These organisms are thought to be the oldest cell-based lifeforms on Earth. They thrive across the entire ...

The International Committee on Systematics of Prokaryotes recently pulled the rank of phylum ... to find that the familiar names and nomenclature for the bacteria and archaea they study had been ...

Planctomycetes challenge our concept of the bacterial cell and of a prokaryote as a cell structure type, as well as our ideas about origins of the eukaryote nucleus. Planctomycetes Are Important ...

According to this latest study, all complex life forms (a.k.a. eukaryotes) trace their roots back to a common ancestor among a group of microbes called the Asgard archaea.

The discovery of a previously underestimated capability in archaeal, one of the three primary domains of life, is changing our comprehension of energy generation and the origins of eukaryotic life.

But there are none. Instead, there is a yawning gulf. On one side there are the tiny bacteria and archaea, collectively known as prokaryotes. On the other side there are the huge and unwieldy ...