A) pyruvate dehydrogenase
B) pyruvate decarboxylase
C) PEP carboxylase
D) Rubisco
Correct Answer: C
Solution :
In \[{{\text{C}}_{\text{4}}}\text{-}\]plants, initial fixation of \[C{{O}_{2}}\] occurs in mesophyll cells, the primary acceptor of \[C{{O}_{2}}\] is phosphoenol pyruvate or PEP. It combines. With \[C{{O}_{2}}\] in the presence of PEP carboxylase to form oxaloacetic acid. \[PEP+C{{O}_{2}}+{{H}_{2}}O\xrightarrow[{}]{PEP\,carboxylase}\] Oxaloacetic acid\[+{{H}_{3}}P{{O}_{4}}\]
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