A) interfere with protein synthesis
B) stop the electron transport chain in the last step by combining with cytochrome oxidase
C) stop DNA-replication
D) induce accumulation of waste materials inside the cell
Correct Answer: B
Solution :
Cyanides like KCN, NaCN, etc. are lethal to humans because they stop the electron transport chain in the last step by combining with cytochrome oxidase.
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