Which enzyme catalyzes the primary carboxylation reaction in the Calvin cycle?

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RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase) is the most abundant protein on Earth and the key enzyme in the Calvin cycle (C3 pathway). It catalyzes the fixation of CO2 by attaching it to Ribulose-1,5-bisphosphate (RuBP) to form a 6-carbon intermediate that immediately splits into two molecules of 3-PGA.

Which enzyme catalyzes the primary carboxylation reaction in the Calvin cycle? MCQ with Answer and Explanation

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