Question
Which of the following is an inhibitor of the step(marked by an arrow) in the pathway shown in the image?
A. Cyanide
B. Barbiturate
C. Rotenone
D. Oligomycin
Show Answer
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Correct Answer » A
Explanation
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Ans:Cyanide.
Electron Transport Chain is shown in the image.Complex IV is marked in the image.Cyanide is an inhibitor of Complex IV.
Inhibitors of ETC:
Cyanide:Inhibitor of Complex IV/Cytochrome Oxidase.
Barbiturates and Rotenone:Inhibitor of Complex I/NADH dehydrogenase
Oligomycin:Inhibitor of F0 component of FoF1 ATP synthase.
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