We're not referring to the Bacteria domain, however. In this lesson, we will examine the main characteristics of the least commonly known domain, the Archaea. Distinctive characteristics of. Archaea. • Cell wall. • Lipids/membrane. • Information processing. • Physiological adaptations to extreme environments. Archaea constitute a domain of single-celled microorganisms. These microbes (archaea .. Other characteristic archaeal features are the organization of genes of related function—such as enzymes that catalyze steps in the same metabolic  ‎Classification · ‎Origin and evolution · ‎Reproduction · ‎Ecology.


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An extremophile is an organism that has evolved to thrive under chemical or physical extremes. So an extremophile is archaea characteristics organism that loves extreme chemical or physical conditions. These extremes can include very high or archaea characteristics temperatures, the ends of the pH spectrum, or solutions with high salt content.

Characteristics of Archaebacteria

archaea characteristics Undoubtedly, some of the novel genes found in Archaea are responsible for their ability to survive in crazy environments. Now, not all Archaea are extremophiles; some are perfectly happy at normal environmental archaea characteristics like those found in soil, lakes, and oceans.

But let's talk about a few of the extremophile groups. A unique characteristic of Archaea characteristics is the presence of ether linkages in the lipids of their cytoplasmic membranes which distinguishes archaea form eukaryotes and most bacteria.

  • Archaea | prokaryote |
  • Archaea: Definition, Characteristics & Examples - Video & Lesson Transcript |
  • Archaea: Definition, Characteristics & Examples
  • Characteristics of the archaea

In contrast, the archaea have ether bonds connecting fatty acids to molecules archaea characteristics glycerol. Although a few bacteria also contain ether-linked lipids, no archaea have been discovered that contain ester-linked lipids.

Characteristics of Cell Membrane of Archaea | Bacteria

These dissimilar parts are connected by a glycerol moiety. In water, phospholipids cluster, with the heads facing the water and the tails facing away from it. The major structure in cell membranes is archaea characteristics double layer of these phospholipids, which is called a lipid bilayer.

The phospholipids of archaea are unusual in four ways: They have membranes composed of glycerol- archaea characteristics lipidswhereas bacteria and eukaryotes have membranes composed mainly of glycerol- ester lipids.

Archaea - Wikipedia

Archaea characteristics ester lipids this is an ester bondwhereas in ether archaea characteristics this is an ether bond. Archaea are also found living in association with eukaryotes.

For example, methanogenic archaea are present in the digestive systems of some animals, including humans. Some archaea form symbiotic relationships with sponges.

In fact, Cenarchaeum symbiosum was grown in the laboratory with its host sponge and was archaea characteristics first nonthermophilic Crenarchaeota to be cultured and described. Wherever methane gas is produced by life, Euryarchaeota are responsible. Some methanogens live in the human gut and assist us in the same way.

They can also be found in deep sea sediments, where they produce pockets of methane beneath the ocean floor. Korarchaeota are the archaea characteristics, and thought to be the oldest lineage of archaebacteria.


This makes them possibly the oldest surviving organisms on Earth! Korarchaeota can be found in hydrothermal environments much like Crenarchaeota. This phylum has a single representative member named Nanoarchaeum equitans. This archaea characteristics archebacterium is an obligate symbiont of another archaea belonging to the genus Archaea characteristics.

Characteristics of Archaebacteria

Methanogens harvest energy by converting H2 and CO2 into methane gas. They are found in the intestinal tracts of humans and some animals such as cows, and in archaea characteristics.

Halophiles survive in archaea characteristics high-salt atmosphere. Hence, they are found in the Great Salt Lake, Dead Sea and other areas with a high salt concentration.

Thermoacidophiles are found in the areas with very high temperatures and extremely acidic conditions.