Wikimedia Commons. Thermophiles. Depending on their genetic structure, extremophiles can thrive in different environments. Extremophiles are organisms that live at extremes of pH (beyond the ‘normal’ range of 5.0–8.5), temperature (above 45 °C or below 15 °C), pressure, or salinity. Types of extremophiles. An extremophile is any microbe that thrives in extreme conditions of temperature, pressure, salinity, or concentrations of hostile chemicals.Many extremophiles belong to the kingdom Archaea, also known as Archaebacteria, and most known Archaebacteria are extremophiles.There are also extremophiles to be found outside the kingdom Archaea; for example there are bacteria and … Hemoglobin levels increase in the shrimp when the water’s salinity increases. b. can be used as a terminal electron acceptor by microbes capable of cellular respiration, thereby generating more energy than other pathways. Extremophile Definition. Many different types of extremophiles may have existed or may exist now on Mars which is a cold, dry, and high UV light environment. c. is relatively chemically inert. Most known extremophiles are microbes. Humans are largely specialized to … These environments are inhospitable, reaching extreme conditions of heat, acidity, pressure, and cold that would be fatal to most other life forms. In what conditions does each extremophile live? d. is a needed substrate for all metabolism. The cold doesn't agree with everyone. It is a mistake to use the term extremophile for all archaeans, since some of them are mesophilic. The domain Archaea has well-known examples of extremophiles, but some bacteria are also extremophiles. Types of Extremophiles Endoliths Endoliths are organisms that can survive withing solid rock or deep within the earths crust.Endoliths can survive for hundreds of years by feeding on trace amounts of iron, potassium and sulfur found in the rocks they inhabit.Many scientists think The word extremophile therefore describes a microorganism that loves extreme conditions. Methane Ice Worm. a. is required by all microbes except for some types of extremophiles. 11 Polar Sea Extremophiles. A psychrophile (cryophile) is an organism that survives in extreme cold conditions. BY Arallyn Primm. Today we look at four types of extremophiles: thermophiles, psychrophiles, halophiles and acidophiles. January 13, 2014. They may look alien, but the hideous creature pictured below is a methane ice worm, discovered here on Earth in 1997, living on the sea floor of the Gulf of Mexico. This organism can survive in temperatures ranging from -15o C to 10o C. (Conway et al. 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