Metabolism close metabolismAll the chemical reactions in the cells of an organism, including respiration. is the term used for all the chemical reactions that happen inside an organism's body.

Respiration is a chemical reaction that happens in all living cells, including plant cells and animal cells. It is the way that energy is released from glucose so that all the other chemical ...

Animals, plants and many other living organisms inhale oxygen to "burn" (oxidize) compounds like sugar into CO 2 and water—a process during which the energy-rich molecule ATP is produced.