A) The carboxylation of\[RuBP\]is catalysed by rubisco
B) The first stable intermediate compound formed is phosphoglycerate
C) 18 molecules of ATP are synthesized during carbon fixation
D) NADPH\[+{{H}^{+}}\]produced in light reaction is used to reduce diphosphoglycerate
Correct Answer: C
Solution :
In Calvin cycle, 18 molecules of ATP are used in carbon fixation. The overall reaction of Calvin cycle represents as \[6RuBP+6C{{O}_{2}}+18ATP+12NADPH\xrightarrow{{}}\] \[6RuBP+{{C}_{6}}{{H}_{12}}{{O}_{6}}+18ADP+18P+12NAD{{P}^{+}}\]
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