Prokaryotes are divided into two distinct groups: the bacteria and the archaea ... Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles ...

Originally discovered in extreme environments such as hydrothermal vents, archaea ... organisms whose cells contain a nucleus ...

The electrons are then transferred across the cell membrane to another microbe, reducing sulfate, which is a common principle in alkane-oxidizing consortia" says Gunter Wegener. A milestone in the ...

Bacteria and archaea cells just don’t have what it ... The cell’s universal energy currency, ATP, is manufactured at the cell membrane. But as cells grow larger, their surface area to volume ...

All of the usual stuff we think of as “life”—things like trees, fungi, and animals—are eukaryotes, meaning that their cells contain a nucleus and other membrane-bound organelles.