What is the first step in the Calvin cycle? A) O₂ attaches to CO₂. B) O₂ attaches to G3P. C) CO₂ attaches to RuBP. D) CO₂ attaches to Rubisco. E) CO₂ attaches to phosphoglycerate.

Question

Quizplus · Accepted Answer

The first step in the Calvin cycle involves carbon dioxide (CO2) attaching to ribulose bisphosphate (RuBP), which is catalyzed by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco).

What Is the First Step in the Calvin Cycle