Holt Modern Biology 1st Edition by John Postlethwait ,Janet Hopson

Exercise 8

Predicting Results When the CO₂ concentration in the cells of a C 3 plant is low compared with the O₂ concentration, an enzyme combines RuBP with O₂ rather than with CO₂. What effect would this enzymatic change have on photosynthesis? Under what environmental conditions would it be most likely to occur?