The driving force of ATP synthesis at the location of the ATP synthesis complex is the _________________?

Question

I believe it is the matrix but am not sure and it is just a guess.

please help.


You are right, but I think they want mitochondria for an answer. If I was the teacher, I'd give you credit because the matrix is within the mitochondrion (mitochondria plural).

Please see:
http://en.wikipedia.org/wiki/Mitochondria