Q379
The carbon dioxide acceptor in Calvin cycle/C3-plants is
A.
Phospho-enol pyruvate (PEP)
B.
Ribulose 1, 5-diphosphate (RuBP)
AnswerC.
Phosphoglyceric acid (PGA)
D.
Ribulose monophosphate (RMP)
Answer: Option B
Solution
Answer: Option B
Solution:
The carbon dioxide acceptor in Calvin cycle/C3-plants is Ribulose 1, 5-diphosphate (RuBP).Ribulose 1,5-bisphosphate (RuBP) is an organic substance that is involved in photosynthesis, notably as the principal CO2 acceptor in plants. It is a colourless anion, a double phosphate ester of the ketopentose (ketone-containing sugar with five carbon atoms) called ribulose.
The enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (rubisco) catalyzes the reaction between RuBP and carbon dioxide.