Answer the following question given this paragraph: After citric acid forms, it goes through a series of reactions that release energy. The energy is captured in molecules of NADH, ATP, and FADH 2 , another energy-carrying compound. Carbon dioxide is also released as a waste product of these reactions. Q: After citric acid forms, it goes through a series of reactions that release what, which is then captured in special molecules? A:

Possible answers: (a). metabolytes; (b). chlorophyll; (c). hydrogen; (d). energy;
Answer:
(d).