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Astrobiology Extremophiles Where is life?

Astrobiology Extremophiles Where is life?. Types of Extremophiles. Acidophile : An organism with an optimum pH level at or below pH 3. Alkaliphile : An organism with optimal growth at pH levels of 9 or above. Endolith : An organism that lives inside rocks.

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Astrobiology Extremophiles Where is life?

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  1. Astrobiology Extremophiles Where is life?

  2. Types of Extremophiles • Acidophile: An organism with an optimum pH level at or below pH 3. • Alkaliphile: An organism with optimal growth at pH levels of 9 or above. • Endolith: An organism that lives inside rocks. • Halophile: An organism requiring at least 0.2M of NaCl for growth. • Hypolith: An organism that lives inside rocks in cold deserts. • Metalotolerant: capable of tolerating high levels of heavy metals, such as copper, cadmium, arsenic, and zinc. • Oligotroph: An organism capable of growth in nutritionally limited environments. • Piezophile: An organism that lives optimally at high hydrostatic pressure. See also Barophile • Polyextremophile: An organism that can survive different extreme conditions. • Psychrophile: An organism that can thrive at temperatures of 15 °C or lower. • Radioresistant: resistant to high levels of ionizing radiation. • Thermophile: An organism that can thrive at temperatures between 60-80 °C. • Xerotolerant: requires very little water to survive.

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