The electron transport chains that sit in both the mitochond…

The electron transport chains that sit in both the mitochondrial inner membrane and the thylakoid membrane use the energy from donated electrons to pump H+ ions (i.e., protons) across these membranes. Answer the question below given that: 1) A high H+ concentration results in a low pH 2) Enzymes used in the Calvin Cycle and the Kreb’s Cycle denature at low pH    Where (i.e., within which spaces between membranes) inside mitochondria AND chloroplasts must H+ be kept at a high concentration?