Match the following with respect to $C_{4}$ cycle.

List – I List – II
A) Product of Carboxylation coupled to dephosphorylation of substrate I) Phosphoenol pyruvic acid
B) Product of carboxylation and cleavage of the substrate. II) Oxaloacetic acid
C) Product of oxidative decarboxylation reaction III) Phosphoglyceric acid
D) Product of substrate phosphorylation reaction IV) Pyruvic acid

List – I	List – II
A)	Product of Carboxylation coupled to dephosphorylation of substrate	I)	Phosphoenol pyruvic acid
B)	Product of carboxylation and cleavage of the substrate.	II)	Oxaloacetic acid
C)	Product of oxidative decarboxylation reaction	III)	Phosphoglyceric acid
D)	Product of substrate phosphorylation reaction	IV)	Pyruvic acid

Moderate

Solution

In the primary carboxylation of $C_{4}$ cycle there is carboxylation and dephosphorylation of phosophoenol pyruvic acid to form oxaloacetic acid. In oxidative decarboxylation reaction malic acid is converted to pyruvic acid. In the phosphorylation reaction pyruvic acid is converted to phosphoenol pyruvic acid. In the secondary carboxylation reaction ribulose-bisphosphate is carboxylated and cleaved to phosphoglyceric acid.

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