urvashi last edited by
When does RUBP combines with oxygen and co2?
At high temperatures & high oxygen concentration RuBP carboxylase which is main enzyme of photosynthesis functions as oxygenase,then RuBP combines with oxygen
It combines with O2 and Co2 both... according to the concentrations....
( So if o2 is high ,it combines with it
And if CO2 levels are high it combines with CO2 .....)
Generally speaking rubisco ( enzyme) has more affinity for CO2...