What Are Some Interesting Facts About Archaebacteria?

Archaebacteria are sometimes known as archae, which is the Greek word for "old", and are single-celled organisms which do not have a cell nucleus. Despite being similar to other single-celled bacteria with no nucleus, archaebacteria are considered to be completely separate from them, and so have a different name - eubacteria is the term used to refer to all other bacteria, while archaebacteria is a more specific name.

It is widely believed that archaebacteria are approximately 3.5 billion years old, and have been on planet Earth for almost as long as it has existed. Compare this 3.5 billion years with the 600 million years for which animals have existed, and animals, including human beings, are practically babies! Because of their age, archaebacteria are more useful than most bacteria for research into evolution and the origin of life.

There are three distinct types of archaebacteria. The first type are called methanogens. These archaebacteria produce methane gas, which is where they get their name from. They are found in the intestines of ruminants, which are animals such as cows and sheep, and also in sewage treatment sites and sites such as boggy marshland. Ancient methanogens are a source of natural gas, and therefore, are a source of energy. The second type of archaebacteria are called halophiles. Unlike most types of bacteria, halophiles seem to need a high availability of salt to survive, as they are found in salt lakes and pools of sea water. The third type of archaebacteria are called thermophiles. These thrive in areas where high hydrothermal energy is present, at sites such as geysers and hot springs, and can survive in temperatures higher than the boiling point of water, 100°c. Due to the fact that they can survive in conditions in which all other bacteria die, archaebacteria can be described as extremophiles.

Interesting facts:
*They are not actually bacteria, but belong to their own dominion
*No species of archaebacteria is known to cause infection or disease
*They are drawn to extreme environments, such as: Thermal vents, hot springs, methane infested areas

Archaeobacteria are prokaryotic, which means they have are unicellular. They can live in water with temperature as high as boiling sea water, as well as salty habitats. Archaeobacteria have biochemical and genetic properties which are different from all other forms of life. There are three main phyla: Methanogens, Thermoacidophiles, and Extreme Halophiles.
Methanogens are anerobic methane producers. This can be found in soil, swamps, digestive track of animals, and in a human large intestine. Thermoacidophiles ccan live in very hot environments that are often filled with lots of acid. Most of these species can tolerate temperatures up to 100 degrees C. Lastly, Extreme Halophiles live in environments with very high salt content like the Dead Sea and the Great Salt Lake. Almost all of them are aerobic.
Archaeobacteria cannot live in places below seventy degrees.

Archbactiria is a single called organism

There are more archeabacteria then there are humans in the planet.

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