Most of the key energy-generating chemical reactions used by life on Earth are

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The key energy-generating chemical reactions used by life on Earth are redox reactions, which involve the transfer of electrons between molecules. In these reactions, one molecule loses electrons (oxidation) while another molecule gains electrons (reduction). Redox reactions are critical for cellular respiration, the process by which organisms generate ATP, the molecule that serves as their main energy source.

Most of the Key Energy-Generating Chemical Reactions Used by Life