As electrons are passed through the electron transport chain, the series of redox reactions generates free energy that is used for what purpose?
a. The free energy is used to pump hydrogen ions (protons) across the mitochondrial membrane.
b. The free energy is shuttled to glycolysis to aid in the metabolism of glucose.
c. The free energy is used to manufacture enzymes to regulate cell metabolism.
d. The free energy is stored and used to drive cell processes when ATP is in short supply.
a. The free energy is used to pump hydrogen ions (protons) across the mitochondrial membrane.
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