What is respiration in organisms?

Respiration in organisms is the biological process by which cells break down food, especially glucose, to release energy required for various life activities.

This process involves the intake of oxygen (in most organisms), the breakdown of food molecules, and the release of energy along with by-products such as carbon dioxide and water.

The energy released during respiration is used for essential functions like movement, growth, repair, and maintenance of the body.

Respiration occurs continuously in all living cells and is vital for survival, as it provides the energy needed to carry out all metabolic activities.