Describe the experiment used to test the proton-motive force. Draw it.
Answer: Used light sensitive bacteriorhodopsin protein incorporated on one end of a vesicle membrane, ATP synthase on the other. The protein is closed when in the dark. Put a high concentration on H+ ions and ADP + Pi outside the vesicle. Then shine light on the vesicle. They found that the ATP was produced. So the proton motive force is coupled with ATP synthesis.