81.W hich of the following enzyme catalyses the carboxylation in Calvin cycle? A. RuBP carboxylase B. NADP reductase C. ATP are D. PEP carboxylase
Option A Photosynthesis comprises of light phase and dark phase. During light phase reducing power and assimilatory powers are synthesized, which are used in the dark phase to reduce carbon dioxide to carbohydrates. The dark phase comprises of initial carboxylation reaction, reduction of phosphoglyceric acid to phosphoglyceraldehyde and synthesis of carbohydrates and regeneration of ribulose 1,5 bisphosphate from phosphoglyceraldehyde. The initial carboxylation comprises of reaction between carbon dioxide and ribulose 1,5 bisphosphate to generate two molecules of phosphoglyceric acid. This reaction is catalyzed by ribulose 1,5 bisphosphate
