There are three main groups of Archaeabacteria: Crenarchaeota, Euryarchaeota and Korarchaeota. Crenarchaeota are extremely heat tolerant, and Euryarchaeota survive in oxygen-free or salty habitats. Korarchaeota are the least understood of the groups.Know More
Most Archaeabacteria are extremophiles that thrive in habitats that are inhospitable to most other life. Crenarchaeota are thermophiles, many of which also withstand sulfur and high acidity. These organisms live in volcanic habitats and hot springs. The pH of their environment ranges from 5 to 1, and they withstand temperatures over 230 degrees Fahrenheit.
Euryarchaeota contains halophiles, organisms that thrive in environments like salt lakes. This group also includes methanogens that live in anaerobic conditions, such as wetlands and even the intestines of other animals. Methane gas is the product of methanogen metabolism.
Like Crenarchaeota, Korarchaeota live in high-temperature habitats, such as hot springs. These organisms are primitive, and they are some of the least common Archaeabacteria in nature.
Archaebacteria and Eubacteria, or true bacteria, share a common ancestor, and Archaeabacteria are similar to true bacteria, as well as eukaryotic life. Research suggests that eurkaryotes rise, evolutionarily, from Archaeabacteria. Further, it is hypothesized that eukaryotes and Crenarchaeota have more in common than the different groups of Archaeabacteria have with one another.Learn more about Biology
Some archaebacteria are photosynthetic, meaning they make their own food; however, rather than use the pigment chlorophyll like green plants and algae, they employ a light-sensitive purple protein called bacteriorhodopsin. Other archaea live in places where no sunlight penetrates, such as deep-sea thermal vents. These bacteria rely on a process called chemosynthesis to make ATP.Full Answer >
Archaebacteria move by using a form of flagellum to propel themselves. This structure vaguely resembles a tail coming off the organism, and an archaebacterium rotates it rapidly, like a boat propeller, to move.Full Answer >
Archaebacteria are single-celled organisms that are commonly found in highly inhospitable locations with extreme temperature fluctuations or in water with high alkaline or acid levels. The term archaebacteria has been widely abandoned for the use of archaea, as they are their own class of organism and are not bacteria.Full Answer >
Examples of archaebacteria include the halophiles, the methanogens and the thermophiles. Arcahebacteria are unicellular organisms belonging to the domain Archaea. One characteristic they all have in common is the ability to thrive in extreme environmental conditions that existed several billion years ago.Full Answer >