Multiple choice

Priya was working in a laboratory and consumed cyanide. She was rushed to hospital where she was declared dead. Cyanide is a known inhibitor of Electron Transport chain (ETC). Which complex of ETC might have been inhibited?

  1. Complex I

  2. Complex II

  3. Complex III

  4. Complex IV
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the above case the cyanide must have blocked complex IV. It  blocks complex IV by taking electrons from complex III in the electron transport chain in the mitochondira of cells, so not enough ATP is formed for the functions of the body. Thus the diaphragm becomes paralyzed and the person dies.

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