Some microbes use non-O2 electron acceptors to complete the electron transport chain.An example of an organism that carries out this type of electron transport is a soil bacterium that takes in nitrate (NO3−) and releases nitrogen gas (N2) .The nitrate functions as a(n)
A) energy source.
B) electron acceptor.
C) source of electrons.
D) fuel molecule.
E) respiratory chain component.
Correct Answer:
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