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Which of the following pairs is mismatched?Group of answer choicesdissimilatory sulfate-reducing bacteria  produce H2Schemoautotrophic bacteria  fix atmospheric nitrogenCytophaga  a gliding, nonfruiting bacteriumarchaea  extremophilesactinomycetes  reproduce by fragmentation

Question

Which of the following pairs is mismatched?Group of answer choicesdissimilatory sulfate-reducing bacteria  produce H2Schemoautotrophic bacteria  fix atmospheric nitrogenCytophaga  a gliding, nonfruiting bacteriumarchaea  extremophilesactinomycetes  reproduce by fragmentation

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Solution

The mismatched pair is "chemoautotrophic bacteria - fix atmospheric nitrogen". Chemoautotrophic bacteria are known for their ability to produce their own food by using chemical energy, but they are not typically associated with the fixation of atmospheric nitrogen. Nitrogen fixation is usually associated with certain specific bacteria like Rhizobium, which live in symbiosis with leguminous plants.

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