AP BIOLOGY

PHOTOSYNTHESIS

C 4 PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
CO2 acceptor in C3 plants is
A
Phosphoglyceric acid
B
Ribulose monophosphate
C
Ribulose 1, 5 bisphosphate
D
Phosphoenol pyruvate
Explanation: 

Detailed explanation-1: -RuBP (ribulose bisphosphate-5C) acts as the primary CO2 acceptor in C3 plants, leading to the formation of 2 molecules of 3-PGA (C3 acid). The enzyme RuBP carboxylase-oxygenase (RuBisCO ) catalyses the reaction.

Detailed explanation-2: -Ribulose 1, 5-bisphosphate (RuBP) is an organic substance that is involved in photosynthesis, notably as the principal CO 2 acceptor in plants.

Detailed explanation-3: -The primary CO2 acceptor of C3 plants is Ribulose 1, 5-1bisphosphate (RuBP) and the primary acceptor of CO2 in C4 plants is phosphoenolpyruvate (PEP). Was this answer helpful?

Detailed explanation-4: -It is found in the mesophyll cells. It enables plants to ‘fix’ carbon from the atmosphere and convert into photosynthetic products.

Detailed explanation-5: -Ribulose-1, 5-bisphosphate carboxylase/oxygenase (RuBisCO) is the key enzyme involved in photosynthetic carbon fixation, as it catalyzes the conversion of atmospheric CO2 into organic compounds.

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