This is the last law of thermodynamics that we know of so far. The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.
Explanation: ATP molecules can be made per oxidized<u> glucose molecule during cellular respiration</u> (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).