A Bacterium Capable of Producing Methane and Water from Carbon

question 1

Multiple Choice

A bacterium capable of producing methane and water from carbon dioxide and hydrogen performs a type of metabolism called __________ and, given its sources of electrons, it is a __________.

• A) methanogenesis; lithotroph
• B) respiration; heterotroph
• C) fermentation; organotroph
• D) carbon fixation; phototroph
• E) none of the above

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