Halobacterium salinarum= halophilic archaean specimen. QUESTIONS: (point form answers) Describe the location and environment in which both halophiles were first isolated.Give a brief overview of the domain, Archaea. When was the domain Archaea first established? Explain why halophilic archaeans are considered to be extremophiles. In general, where are halophiles found and what other intense conditions do they encounter in their natural environments in addition to high salinity? What is the cellular mechanism that allows halophiles to cope with high extracellular salt concentrations? As a biologist, why are halophilic archaeans worth investigating?
Added by Jose Francisco K.
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- The domain Archaea was first established in 1977 by Carl Woese and George E. Fox. - Archaea is a domain of single-celled microorganisms. These microbes have no cell nucleus or any other membrane-bound organelles within their cells. They are known for their Show more…
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Halophilic bacteria are able to live and grow in extremely high salt pools that are too salty for other life forms to thrive in. These organisms have adapted salt pumps that move salt ions across the membrane. Using your knowledge of osmosis, determine which direction is advantageous for the salt to be pumped (in to OR out of the cell) and describe how this action is advantageous to the bacterial cell. Use one of the terms: Hypotonic/Isotonic/Hypertonic, in your answer.
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