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Photosynthesis in Higher Plants
Calvin Cycle - Carboxylation
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Concepts tested
- RuBisCO Function
All Questions
2025 1 question
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Which of the following statements about RuBisCO is true?
RuBisCO catalyzes the carboxylation of ribulose-1,5-bisphosphate (RuBP) in the Calvin cycle.
RuBisCO (RuBP carboxylase-oxygenase) catalyzes the crucial initial carbon-fixing step: carboxylation of RuBP with $CO_2$ to form two molecules of 3-PGA. It has higher affinity for $CO_2$ than $O_2$ under normal atmospheric ratios.