Which key photosynthetic enzyme catalyzes the fixation of carbon dioxide to ribulose-1,5-bisphosphate in the Calvin cycle?
Answer and explanation
Correct answer: D. RuBisCO
- Step 1: RuBisCO (Ribulose-1,5-bisphosphate carboxylase-oxygenase) fixates CO2 into two molecules of 3-phosphoglycerate. Step 2. It is recognized as the most abundant protein on Earth. Answer: RuBisCO. Why not the others: ATP synthase phosphorylates ADP; DNA polymerase replicates genetic material; phosphofructokinase is a glycolytic enzyme.
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