Here is a question form my test.
If you could measure the pH of the interior of thylakoids and the surrounding stroma during active photosynthesis what would be the relative pH of each?
The answer is C.
the stroma would have a higher pH
I understand that proton gradient is from stroma to thylakoid space, but that does not mean stroma would have less protons than thylakoid space, if stroma would have a higher pH, then the proton will never flow from stroma to thylakoid space, right?