One Unique Characteristic Associated with Some of the Extreme Halophilic

question 49

Multiple Choice

One unique characteristic associated with some of the extreme halophilic Archaea is that:

• A) they are found at deep-sea vents on the sea floor.
• B) they are a source of most known antibiotics.
• C) they have photosynthetic ability involving a purple bacteriorhodopsin pigment.
• D) they fix atmospheric nitrogen that is then used by plants.
• E) most form symbiotic associations.

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