Domain Archaea Biology Definition
Domain archaea contains some prokaryotic cells that live in conditions that are too extreme for other forms of life.
Domain archaea biology definition. Thermophiles thrive at temperatures as hot as 90 c and are found in deep sea volcanic vents and hot springs. Crenarchaeota euryarchaeota and korarchaeota. Archaea domain archaea any of a group of single celled prokaryotic organisms that is organisms whose cells lack a defined nucleus that have distinct molecular characteristics separating them from bacteria the other more prominent group of prokaryotes as well as from eukaryotes organisms including plants and animals whose cells contain a defined nucleus.
They include the halophile s archaea inhabiting extremely salty environments methanogen s archaea producing methane and thermophile s archaea that thrive in scorching environments. These prokaryotes have evolved to withstand temperatures that would otherwise kill cells by denaturing dna and proteins. Organisms are now classified into three domains and six kingdoms.
The domains include eukaryota eubacteria and archaea.