Answer:
Based on the excerpt, the mitochondria can be described as the powerhouse of the cell.
Mitochondria are organelles of the body which convert oxygen and sugar (glucose) into water and carbon dioxide along with the release of ATP. The ATP synthesized by the mitochondria are used to carry out the normal and essential functions of a cell. Hence, the mitochondria can be described as the powerhouse of a cell as they provide each cell with the energy for carrying out its function.