In the carbon fixation step of the Calvin cycle,ribulose-1,5-bisphosphate (a five-carbon compound)is carboxylated to produce _____.
A)5 molecules of carbon dioxide
B)2 three-carbon compounds
C)acetyl CoA (two carbons)and oxaloacetate (four carbons)
D)glucose

Question

Quizplus · Accepted Answer

Ribulose-1,5-bisphosphate is carboxylated with carbon dioxide to form two three-carbon compounds, 3-phosphoglycerate, in the carbon fixation step of the Calvin cycle. These three-carbon compounds will eventually be used to produce glucose.

In the Carbon Fixation Step of the Calvin Cycle,ribulose-1,5-Bisphosphate (A