What type of reaction is cellular respiration?

Cellular respiration is primarily classified as an exothermic reaction because it releases energy in the form of ATP, which is used by cells for various functions. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, along with the release of energy. The overall process involves breaking down glucose, which stores a significant amount of chemical energy. This energy is released as heat and is harnessed to produce ATP through metabolic pathways such as glycolysis, the Krebs cycle, and oxidative phosphorylation.

Additionally, cellular respiration is also categorized as a redox reaction, as it involves the transfer of electrons between molecules. In this process, glucose undergoes oxidation (losing electrons) while oxygen is reduced (gaining electrons). Although both classifications apply, the emphasis on cellular respiration being an exothermic reaction highlights its energy-releasing nature, which is a key aspect of how organisms generate the energy needed for life.