45. The oxidation of a particular hydroxy substrate to a keto product by mitochondria has a P/O ratio of less than 2.
The initial oxidation step is very likely directly coupled to the:
(A) oxidation of a flavoprotein.
(B) oxidation of a pyridine nucleotide.
(C) reduction of a flavoprotein.
(D) reduction of a pyridine nucleotide.
(E) reduction of cytochrome as.
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