Synthesis of ATP takes place when protons flow back to the matrix side through an enzyme complex called ATP synthase. ATP synthase is made up of two operational units: a rotatory and a stationary component. Assume that the ATP synthase does ~ 100 rotations per second, and each rotation results in the generation of 3 ATP molecules. Suppose that a cell needs 3 10¹⁰ molecules of ATP for one round of cell division that t