Number of carboxylation that occur in Calvin cycle is
A
0
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B
1
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C
2
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D
3
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Solution
The correct option is B 1 Carboxylation reaction is the first reaction in Calvin cycle. The enzyme RuBisCO catalyses the carboxylation of ribulose-1,5-biphosphate and produces 3-PGA. The carbon dioxide is fixed by the enzyme and then the carboxylation reaction is carried out.