In a microbial fuel cell, why are the organisms fed a rich diet of organic substrates?
A. The organic substrates ensure that very little biosysnthesis is completed to maximize the amount of substrate being oxidized instead.
B. The organic substrates ensure that waste products are kept to a minimum.
C. The organic substrates ensure that sufficient ATP is produced to drive the reaction.
D. The organic substrates ensure that the cells remain in log phase of the growth curve.
Answer: A
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