Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique ...
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 ...
True to its name, this prokaryote-like organism represents the ancestor of every living thing, from the tiniest of bacteria to the grandest of blue whales. While the Cambrian Explosion kickstarted ...