What type is a better turf? I have often wondered about what was the difference and finally tonight it made a little sense. C-3 pathway: 1. 3 ATP 2. Lower photosynthetic rate 3. Photo-respiration 4. Can not photosynthesize under hi temps 5. occurs only in mesophyll cells C-4 Pathway: 1. 5 ATP 2. Higher photosynthetic rate 3. NO photo-respiration 4. CAN 5. occurs in mesophyll & bundle sheath cells I got my mind blown away about the process of Photosynthesis and how it works. If any one would like to go through it I think it what blow some peoples mind what is happing in a blink.