Answer:
Hydrogen ions flow down a concentration gradient from the thylakoid space to the stroma through ATP synthase, releasing energy that can be used to produce ATP from ADP + Pi.
Step-by-step explanation:
As the phosphate is the essential constituent in the structure of nucleotide that performs the function as molecular currency or intracellular energy transfer. In this compound, the number of phosphates considers the potential of energy, to transfer within the cells. By donating the phosphate groups, this compound adopts the configuration of its lower compound as from ATP to ADP or AMP. To renew the lower compounds to its original state (ATP) the motion of H-ions and phosphate compound requires. In the photosynthesis, by splitting of water, the H-ions release in thylakoid chamber/ With the ATP synthesis machinery on thylakoid membrane, these H-ions move from thylakoid chamber to stroma to provide energy to ATP synthesis machinery. This machinery then uses provided energy to combine the phosphate group to ADP or AMP to convert them into ATP.