Mitochondria are often called the powerhouses of the cell because they make:

1. A powerhouse supplies usable energy to everything around it. 2. Mitochondria are responsible for making adenosine triphosphate. 3. ATP is the cell's main energy-carrying molecule. 4. DNA and RNA carry information rather than energy, and NaCl is a salt. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 4 'Cell Structure', sections 4.1-4.6_