Below is the conversion of ubiquinone to ubiquinol. This reaction takes place in the inner mitochondrial membrane, and ubiquinone and ubiquinol are two forms of coenzyme Q in the electron transport chain. Please analyze the following reaction carefully, and choose the statement which describes it best.

MCQS on the biological importance of organic molecules. Topics include bioorganic mechanisms, chirality, lipids, carbohydrates, animo acids, peptides, proteins, nucleic acids, enzymes, coenzymes, and coupled reactions, and lipid, carbohydrate, amino acid, and nucleotide metabolism.