During the citric acid cycle, three ______ are transferred to three molecules of nicotinamide adenine dinucleotide (NAD$^+$) and two ______ are transferred to one molecule of flavin adenine dinucleotide (FAD). hydride ions; hydrogen atoms protons; hydrogen atoms hydrogen atoms; protons hydrogen atoms; hydride ions
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Step 1: In the citric acid cycle, NAD+ is reduced to NADH by gaining two electrons and one proton. Show more…
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Since no molecular oxygen participates in the citric acid cycle, the steps in which acetyl groups are oxidized to $\mathrm{CO}_{2}$ involve removal of hydride ions and hydrogen ions. What is the acceptor of hydride ions? What is the acceptor of hydrogen ions?
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