Photo respiration lowers the efficiency of photosynthesis by preventing the formation of Naim 01:23 AP Biology Chapter 10 Photo respiration lowers the efficiency of photosynthesis by preventing the formation of A. Carbon dioxide molecule B. 3-phosphoglycerate molecules C. ATP molecules D. Ribulose biphosphate molecules E. RuBP carboxylase molecules Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+