Four primary regions are the brainstem, the cerebellum, the cerebrum, and the cerebral cortex. Each brain region is responsible for a variety of functions, and injury to any of these regions impairs specific functions.
Cellular respiration is a pathway that organisms use to generate energy. Oxygen is required and is used to break down nutrients, like glucose sugar. The nutrients are broken down to generate ATP (energy) and carbon dioxide and water (waste). Organisms from all kingdoms of life can use cellular respiration including bacteria, archaea, plants, protists, animals, and fungi.
1 Cellular respiration, the process in which nutrients are converted into useful energy in a cell. 2  Anaerobic respiration, cellular respiration without oxygen. 3  Maintenance respiration, the amount of cellular respiration required for an organism to maintain itself in a constant state. Cellular respiration, the process in which nutrients are converted into useful energy in a cell. 2  Anaerobic respiration, cellular respiration without oxygen. 3  Maintenance respiration, the amount of cellular respiration required for an organism to maintain itself in a constant state.