More free energy is harvested during the citric acid cycle than during glycolysis, but only mole of ATP is produced for each mole of acetyl CoA that enters the cycle. Most of the remaining free energy released during the citric acid cycle is:.
a. used to synthesize GTP
b. used to reduce electron carriers.
c. lost as heat.
d. used to reduce pyruvate.
e. converted to kinetic energy.