AP BIOLOGY

Detailed explanation-1: -The enzyme ribulose bisphosphate carboxylase oxygenase or RuBisCO catalyse the carboxylation of RuBP.

Detailed explanation-2: -Rubisco catalyses the primary photosynthetic CO2 reduction reaction, the fixation of atmospheric CO2 to ribulose-1, 5-bisphosphate (RuBP) to form two molecules of 3-phosphoglycerate (3PGA), which is subsequently used to build the organic molecules of life.

Detailed explanation-3: -Ribulose-1, 5-bisphosphate carboxylase/oxygenase (Rubisco) is the cornerstone of photosynthetic carbon assimilation because it catalyses the fixation of CO2 onto ribulose-1, 5-bisphosphate (RuBP).

Detailed explanation-4: -More than 90% of the inorganic carbon that is converted into biomass is fixed by the enzyme RubisCO that catalyzes the carboxylation and cleavage of ribulose-1, 5-bisphosphate (RuBP) into two molecules of 3-phosphoglycerate (3PG).

Detailed explanation-5: -Ribulose-1, 5-bisphosphate carboxylase/oxygenase (RuBisCO) is the key enzyme involved in photosynthetic carbon fixation, as it catalyzes the conversion of atmospheric CO2 into organic compounds.