As a forensic pathologist, you have just completed an autopsy of a poisoning victim. After a thorough examination, you conclude that the victim died of cyanide poisoning. You know that cyanide binds to the cytochrome oxidase complex, and therefore list the official cause of death as suffocation due to cyanide exposure. However, if you wanted to provide a more technical explanation as to the cause of death, which process was specifically inhibited directly by cyanide?

A. all proton pumping into the intermembrane space
B. the oxidation of FADH2
C. the formation of water from oxygen
D. the reduction of NAD+
E. ATP synthesis


Answer: C

Biology & Microbiology

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