The movement of protons (h+) through the atp synthase occurs from to proton concentration.

The correct answers are "high; low" in that order. This is the correct answer because hydrogen ions (h+) are in a higher concentration extracellularly The ions are then pumped back into the intracellular matrix via the atp synthase pump where there is a lower concentration of h+ ions.

Ithink you should go back and learn in school rather then here asking questions