1) Both involve electron transport chains. <span>2) Chemiomosis allows ATP synthase to produce ATP. </span> <span>3) Both take place at some point within an organelle (mit. = CR, chloroplast= photo.) </span> <span>4) Both utilize ATP for energy at some points. </span> <span>5) Both provide power for cellular activities. </span> <span>5 Differences </span> <span>1)Cellular respiration depends on oxygen as a substrate. </span> <span>2)Photosythesis utilizes 2 electron transport chains (not just 1). </span> <span>3)In Photo. , energy is provided by photons and not catabolic processes as in cell. resp. </span> <span>4)Photosynthesis involves the production of NADPH (CR involves NADH and FADH2) </span> <span>5)Photosynthesis involves CO2 and H20 as substrates (splitting h20 provides the electrons for the process).</span>
