Number of carboxylation reactions in the C_4 | vedclass

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Question

(B) In the $C_4$ cycle,carboxylation occurs twice.First,carboxylation takes place in the mesophyll cells where Phosphoenolpyruvate $(PEP)$ is carboxyl

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$2$

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(B) In the $C_4$ cycle,carboxylation occurs twice.First,carboxylation takes place in the mesophyll cells where Phosphoenolpyruvate $(PEP)$ is carboxylated by the enzyme $PEP$ carboxylase to form Oxaloacetic acid $(OAA)$.Second,carboxylation occurs in the bundle sheath cells where Ribulose $1, 5$-bisphosphate $(RuBP)$ is carboxylated by the enzyme $RuBisCO$ during the Calvin cycle.

Number of carboxylation reactions in the $C_4$ cycle is/are:

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