Question
Biology Question on Photosynthesis in higher plants
Carbon dioxide acceptor in C3 plants is
A
PGA
B
PEP
C
RuDP
D
none of these.
Answer
RuDP
Explanation
Solution
An enzyme ribulose biphosphate carboxylase catalyses the dark reaction, pertaining to the addition of CO2, to ribulose-1-5-diphosphate. It is found in abundance in leaves and it is believed that it is the single most abundant protein on earth. It is clear that the first acceptor of CO2, is Ribulose 1-5 diphosphate. The first product formed after fixation of CO2, is 3-phosphoglyceric acid.