The outcome of this error would be that the gradient of the proton in the thykaloid space would not be able to be used to produce ATP. This is because the ATP synthase was inserted in a backward position to the membrane which would cause for protons to the build up in the thykaloid space.
Cellular respiration is also a catabolic process because it breaks the small molecules from digestion into even smaller ones as ATP is created. These are both very important processes, because ATP is what your cells use to produce body heat, move your muscles, and other essential bodily functions.