Multiple choice

Cyanide poisoning is due to its direct inhibition of

  1. Electron transport chain

  2. Fatty acid biosynthesis

  3. Fatty acid oxidation

  4. Nucleic acid biosynthesis

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A Correct answer
Explanation

Cyanide binds to the iron in cytochrome c oxidase (Complex IV) in the electron transport chain, effectively halting oxidative phosphorylation and ATP production.