Correct Response: A. Mitochondria are rod-shaped organelles that provide cells, and thus the body, with energy. Mitochondria are the site of cellular respiration in which substances, primarily glucose, are converted in the presence of oxygen to adenosine triphosphate (ATP), which provides energy for cellular activities. B is incorrect because it does not accurately describe processes that occur within mitochondria to provide cellular energy. C is incorrect because the breakdown of proteins is not the preferred pathway for meeting high energy demands. D is a not a process that occurs within organelles.
