Chapter 9 - Pathways That Harvest Chemical Energy - 9.1 - Cells Harvest Chemical Energy from Glucose Oxidation - 9.1 Recap - Learning Outcomes - Page 176: 2

A reaction that involves the transfer of electrons from one reagent to another is called an oxidation-reduction, or redox reaction. Reduction gains electrons and oxidation loses electrons, and they always occur in the same reaction. In terms of hydrogen ions, a molecule is oxidized if it loses an ion and reduced if it gains an ion.

A reaction that involves the transfer of electrons from one reagent to another is called an oxidation-reduction, or redox reaction. Reduction gains electrons and oxidation loses electrons, and always occur in the same reaction. In terms of hydrogen ions, a molecule is oxidized if it loses an ion and reduced if it gains an ion.