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Question

Enzyme responsible for primary carboxylation in C4 plants is

A
PEP carboxylase
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B
Succinic dehydrogenase
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C
RuBP carboxylase oxygenase
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D
Hexokinase
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Solution

The correct option is A PEP carboxylase
A) PEP carboxylase is the primary carbon dioxide acceptor in C4 plants.
B) Succinic dehydrogenase is the enzyme that converts Succinic acid to Fumaric acid in Kreb's cycle.
C) RuBP carboxylase oxygenase is used in C3 plants.
D) Hexokinase is an enzyme that phosphorylates hexoses (six-carbon sugars), forming hexose phosphate. Glucose-6-phosphate is its most important product. It is involved in phosphorylation.
So the correct answer is 'PEP carboxylase'.

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