When organelles are damaged or malfunctioning, it can lead to a variety of diseases and disorders. For example, mitochondrial diseases are caused by problems with the mitochondria. These diseases can range from mild to severe, and they can affect any part of the body. Cellular organelles are essential for the life and function of all cells. They perform a wide range of tasks, from producing energy to building proteins to breaking down waste products. Organelles work together in a complex and coordinated fashion to keep the cell running smoothly.