Which Relationship Is MOST Likely to Be Observed Between Species

question 20

Multiple Choice

Which relationship is MOST likely to be observed between species of different classes?

• A) A deltaproteobacterium oxidizes hydrogen sulfide into sulfate, which is then reduced by an epsilonproteobacterium.
• B) An epsilonbacterium oxidizes the hydrogen sulfide produced by a sulfur-reducing deltaproteobacterium.
• C) A sulfate-reducing epsilonbacterium produces sulfite, which a deltaproteobacterium reduces to hydrogen sulfide.
• D) Syntrophic metabolism of sulfur by a deltaproteobacterium and an epsilonproteobacterium occurs.

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