AP BIOLOGY

Detailed explanation-1: -The enzyme ribulose-1, 5-bisphosphate carboxylase/oxygenase, most commonly known by the shorter name RuBisCO or just rubisco is used in the Calvin cycle to catalyze the first major step of carbon fixation.

Detailed explanation-2: -RuBisCO: The enzyme ribulose bisphosphate carboxylase oxygenase or RuBisCO catalyse the carboxylation of RuBP. It is the first step of the Calvin cycle and the carbon fixation reaction into stable organic intermediate 3-phosphoglyceric acid or PGA.

Detailed explanation-3: -Ribulose-1, 5-bisphosphate carboxylase/oxygenase, better known by the name Rubisco, is the key enzyme responsible for photosynthetic and chemoautotrophic carbon fixation and oxygen metabolism. Scientists believe it is the most abundant enzyme on the planet.

Detailed explanation-4: -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-5: -The enzyme Rubisco, short for ribulose-1, 5-bisphosphate carboxylase/oxygenase, is the enzyme that incorporates CO2 into plants during photosynthesis. As it constitutes about 30% of the total protein in a plant leaf, Rubisco is probably the most abundant protein on earth and a major sink for plant nitrogen.