A Metabolic Process Allowing for Anaerobic Degradation of Benzoate to Acetate

question 61

Multiple Choice

A metabolic process allowing for anaerobic degradation of benzoate to acetate is diagrammed below. This metabolism can happen because

• A) benzoate contains a great deal of energy and ATP can be made.
• B) the catabolism of benzoate by the cell on the left produces hydrogen that is then used by the cell on the right to reduce sulfate.
• C) the catabolism of benzoate by the cell on the left produces hydrogen that is then used by a methanogen.
• D) the catabolism of benzoate to acetate releases so much energy that it overcomes the positive \[\Delta\]G of H₂ production.
• E) the cell on the left swims away from the H₂ that it produces in order to balance the thermodynamics.

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