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What are types of Archaebacteria?

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Quick Answer

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.

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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.

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Related Questions

  • Q:

    Where do archaebacteria live?

    A:

    Archaebacteria, more properly called archaea, are single celled organisms that live in a wide range of habitats, including the harsh conditions of hot springs. Thermophiles are arachea which grow best at temperatures above 45 Celsius, but some species thrive in much warmer temperatures. According to Reference.com, "Methanopyrus kandleri Strain 116 grows at 122 °C, which is the highest recorded temperature at which any organism will grow."

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  • Q:

    What are examples of archaebacteria?

    A:

    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.

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  • Q:

    How do archaebacteria move?

    A:

    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.

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  • Q:

    What are the scientific and common names of Archaebacteria?

    A:

    The scientific and common names for Archaebacteria are both Archaea, as of 2014. Archaea used to be considered bacteria, but are now considered their own kingdom and domain separately.

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