What does the election transport chain release at the end of cellular respiration?

At the end of cellular respiration, the electron transport chain primarily releases water and adenosine triphosphate (ATP). During this process, electrons are transferred through a series of protein complexes, ultimately combining with oxygen and protons to form water. Additionally, the energy released during these electron transfers is used to pump protons across the mitochondrial membrane, creating a gradient that drives ATP synthesis through ATP synthase.