What Is Different About the Way That NADH and FADH₂

question 36

Multiple Choice

What is different about the way that NADH and FADH₂ donate electrons to the electron transport chain?

• A)NADH is oxidized and FADH₂ is reduced.
• B)NADH contributes its electrons to the first transmembrane complex in the electron transport chain and FADH₂ contributes its electrons after the first transmembrane complex.
• C)More protons are transported into the intermembrane space of the mitochondria in response to one molecule of FADH₂ as compared to the number of protons transported in response to one molecule of NADH.
• D)The electrons from NADH ultimately go on to reduce oxygen to generate water,whereas the electrons from FADH₂ are used to reduce pyruvate to lactate.

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