Final answer:
Mitochondria are responsible for making ATP, the cell's main energy-carrying molecule, through cellular respiration.
Step-by-step explanation:
Mitochondria are often called the powerhouses"or energy factories of a cell because they are responsible for making adenosine triphosphate (ATP), the cell's main energy-carrying molecule. Cellular respiration is the process of making ATP using the chemical energy found in glucose and other nutrients. In mitochondria, this process uses oxygen and produces carbon dioxide as a waste product. The carbon dioxide released during cellular respiration is exhaled with every breath. Therefore, the statement is true.