10. A large portion of cellular respiration happens in the mitochondria. For this reason, the mitochondria are known colloquially as the “powerhouses of the cell.” Which body organ could best be compared to the mitochondria?
A. the lungs because they add oxygen to the body
B. the stomach because it breaks down nutrients and releases energy for the body
C. the heart because it pumps nutrients around the body
D. the brain because it controls the body