Question

Compare the ATP production process in photosynthesis with that of cellular respiration. Give at least one difference and one similarity

Answer 1

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