toxicity of cyanide (CN-) results from its binding to the iron atoms of the cytochrome aa3 (complex IV) and subsequent inhibition of mitochondrial electron transport. How does this cyanide–iron complex prevent oxygen from accepting electrons from the electron transport chain?

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  1. The toxicity of cyanide (CN-) results from its binding to the iron atoms of the cytochrome aa3 (complex IV) and subsequent inhibition of mitochondrial electron transport. How does this cyanide–iron complex prevent oxygen from accepting electrons from the electron transport chain?
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