Multiple choice In ETS NADH dehydrigenase is complex I FADH2 is Complex II Cytochrome bC1 is Complex III and Cytochrome c oxidase is comeplx IV All Reveal answer Fill a bubble to check yourself D Correct answer Explanation Complex I is NADH dehydrogenase, Complex II is Succinate dehydrogenase (FADH2), Complex III is Cytochrome bc1, and Complex IV is Cytochrome c oxidase. All statements are correct.