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.
Organisms capable of photosynthesis produce food molecules like carbohydrates. There are many forms of cellular respiration. Some organisms require oxygen to carry out respiration known as aerobic cellular respiration and the respiration that does not require presence of oxygen is called anaerobic cellular respiration.erobic respiration takes place in three stages glycolysis, TCA cycle and electron transport chain. Glycolysis-In glycolysis molecules of glucose in the cytoplasm are broken into molecules of pyruvate. One glucose molecule yields two molecules of pyruvate. TCA cycle-It is also known as Kreb's cycle or Citric acid cycle.