Compounds Like Succinate,fumarate and α-Ketoglutarate Have a Catalytic Effect on the Consumption

question 82

Multiple Choice

Compounds like succinate,fumarate and α-ketoglutarate have a catalytic effect on the consumption of oxygen in a cell suspension.The rate of oxygen consumption is far more than that required for their own oxidation.This is evidence that ________.

• A)they are intermediates in glycolysis
• B)they act as enzymes to cause the oxidation of other compounds
• C)they are involved in a cyclic pathway
• D)they must be cofactors for enzymes that are oxidoreductases

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