The Oxidation of a Particular Hydroxy Substrate to a Keto

question 23

Multiple Choice

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 a₃.

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