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Q. |
Cyanide poisoning causes death in seconds because - |
A. | It denatures enzymes of the heart/muscle |
B. | It breaks the electron transport chain |
C. | It causes Lysis of red blood cells |
D. | It causes cardiac arrest |
Answer» D. It causes cardiac arrest | |
Explanation: Cyanide poisoning occurs on exposure to a com-pound that produces cyanide ions when dissolved in water. The cyanide ion halts cellular respiration by inhibiting an enzyme in the mitochondria called cytochrome c oxidase. If cyanide is inhaled it causes a coma with seizures, apnea, and cardiac arrest, with death following in a matter of seconds. |
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