Which molecule is the CO₂ acceptor in the first step of the Calvin cycle? A)Rubisco. B)Ribulose 1,5-bisphosphate. C)3-phosphoglycerate. D)Glyceraldehyde-3-phosphate.

Question

Quizplus · Accepted Answer

Ribulose 1,5-bisphosphate is the acceptor molecule in the first step of the Calvin cycle where it reacts with CO2 to form two molecules of 3-phosphoglycerate with the help of the enzyme Rubisco. CO₂ is not a known molecule in the Calvin cycle. Glyceraldehyde-3-phosphate is formed after multiple steps in the Calvin cycle and is not the acceptor molecule in the first step.

Which Molecule Is the CO2 Acceptor in the First Step

Which Molecule Is the CO₂ Acceptor in the First Step