Cyanide Acts as a Mitochondrial Poison by Blocking the Final

question 77

Multiple Choice

Cyanide acts as a mitochondrial poison by blocking the final step in the electron transport chain. What will happen to human red blood cells if they are placed in an isotonic solution containing cyanide?

• A)The cell shape will be maintained, but the mitochondria will be poisoned.
• B)The cells will lyse as the cyanide concentration increases inside the cell.
• C)As a protective mechanism, the cells will switch to anaerobic metabolism.
• D)The cells will not be able to carry oxygen.
• E)The cells will probably be unaffected.

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