In Some Organisms, an Alternative Oxidase Will Accept Electrons from Ubiquinol

In some organisms, an alternative oxidase will accept electrons from ubiquinol and reduce oxygen to water with no associated proton translocation. What would be a consequence of having this oxidase active?

A) decreased rate of NADH reoxidation
B) decreased P:O ratio
C) decreased rate of oxygen consumption
D) inhibition of oxidative pathways like the citric acid cycle
E) increased sensitivity to cyanide poisoning

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