Hydrogen-Generating Reactions in Syntrophus and Syntrophomonas Have DG°' > 0

question 55

Multiple Choice

Hydrogen-generating reactions in Syntrophus and Syntrophomonas have DG°' > 0. Can these organisms obtain energy from hydrogen formation?

• A) No, they cannot.
• B) No-they produce energy by breaking down molecules such as benzoate or butyrate.
• C) Yes-hydrogen-producing microorganisms coexist in syntrophy with H₂-consuming bacteria. Utilization of H₂ (DG°' < 0) drives the process forward.
• D) Yes, but only when oxygen is present.
• E) Yes-this happens in sewage but never in a laboratory setting.

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