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  4. Ribulose diphosphate carboxylase oxygenase is located in

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Q. Ribulose diphosphate carboxylase oxygenase is located in

NTA AbhyasNTA Abhyas 2020Photosynthesis in Higher Plants

Solution:

Carboxylation is the fixation of CO2 into a stable organic intermediate occurs in chloroplasts. Carboxylation is the most crucial step of the Calvin cycle where CO2 is utilised for the carboxylation of RuBP. This reaction is catalysed by the enzyme RuBP carboxylase which results in the formation of two molecules of 3-PGA. Since this enzyme also has an oxygenation activity it would be more correct to call it RuBP carboxylase-oxygenase or RuBisCO.