Cyanide Acts as a Mitochondrial Poison by Blocking the Final

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.