Complex sentence: The electron transport chaincoupled with oxidative phosphorylation is responsible for establishing a pH and electrochemical gradient that facilitates the production of ATP and the control of the concetration of ions such as Ca2 + driven by the mitochondrial membrane potential.
Split into simpler sentences: The electron transport chain coupled with oxidative phosphorylation is responsible for establishing a pH and electrochemical gradient that facilitates the production of ATP. The gradient also provides control of the concetration of ions such as Ca2 + driven by the mitochondrial membrane potential.