The passage below outlines the process of oxidative phosphorylation in mitochondria. Complete the passage by using the most appropriate scientific terms. Reduced ..................................................... releases hydrogen atoms to cytochrome carriers. Hydrogen atoms split into protons and electrons and the electrons are passed from carrier to carrier. Energy from electron transfer is used to pump protons into the ..................................................... , so that a proton gradient is set up across the ..................................................... . Protons ..................................................... through the channel protein known as ..................................................... , into the matrix, producing ATP. The protons combine with electrons and ..................................................... atoms to form water.