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During reaction for fixation of carbon, ...

During reaction for fixation of carbon, the three carbon atoms of each molecule of 3-phosphoglyceric acid (PGA) are derived from

A

RuBP only

B

`CO_(2)` only

C

RuBp+`CO_(2)`

D

`RuBP+CO_(2)+PEP`

Text Solution

Verified by Experts

The correct Answer is:
C
In carboxylation Ribulose - 1, 5 - biphosphate (RuBP) (= Ribulose diphosphate) acts as `CO_(2)` acceptor and 6 mols of RuBP react with 6 mols of `CO_(2)` and 6 mols of water giving rise to 12 mols of 3-phosphoglyceric acid.
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