Respiration in living organisms

Respiration in living organisms is the process of converting oxygen and nutrients, primarily glucose, into energy. This energy powers various biological functions such as growth, movement, and repair. During respiration, cells break down glucose in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate), along with carbon dioxide and water as waste products. This process occurs in cells throughout the body and is essential for sustaining life activities. In simple terms, respiration is how organisms generate the energy they need to function and stay alive.