Give the necessary elements of chemiosmosis.

(N/A) Chemiosmosis requires four essential components: a membrane,a proton pump,a proton gradient,and the enzyme $ATPase$.
$(a)$ $A$ membrane is required to separate the two compartments (e.g.,thylakoid lumen and stroma).
$(b)$ $A$ proton pump uses energy to move protons across the membrane,creating a proton gradient or a high concentration of protons within the thylakoid lumen.
$(c)$ $ATPase$ contains a channel that allows the facilitated diffusion of protons back across the membrane to the stroma. This movement releases sufficient energy to activate the $ATPase$ enzyme,which catalyzes the formation of $ATP$ from $ADP$ and inorganic phosphate.