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,a more technical explanation would be that all of the following aspects of cellular respiration were inhibited except

Question

Quizplus · Accepted Answer

Cyanide specifically inhibits the electron transport chain in cellular respiration by binding to the cytochrome oxidase complex, which is the final enzyme in the chain. This inhibition results in a lack of ATP production in oxidative phosphorylation. However, other aspects of cellular respiration, such as the reduction of NAD⁺ and FAD, as well as proton pumping, are not affected by cyanide poisoning. Therefore, the correct answer is A, as this process is still able to occur in the presence of cyanide.

As a Forensic Pathologist,you Have Just Completed an Autopsy of a Poisoning