Following carbon atoms around the Calvin cycle,

The net reaction of the Calvin cycle is the conversion of CO₂ into the three-carbon sugar G3P. Along the way, reactions rearrange carbon atoms among intermediate compounds and use the ATP and NADPH produced by the light reactions. In this exercise, you will track carbon atoms through the Calvin cycle as required for the net production of one molecule of G3P.

For each intermediate compound in the Calvin cycle, identify the number of molecules of that intermediate and the total number of carbon atoms contained in those molecules. As an example, the output G3P is labeled for you: 1 molecule with a total of 3 carbon atoms. Labels may be used once, more than once, or not at all.

a. 3 molecues, 3 carbons total

b. 5 molecules, 15 carbons total

c. 3 molecules, 15 carbons total

d. 6 molecules, 18 carbons total

e. 1 molecule, 1 carbon total

f. 1 molecule, 5 carbons total

Question

Biology

Galloway

21 March, 13:15

Following carbon atoms around the Calvin cycle,

The net reaction of the Calvin cycle is the conversion of CO₂ into the three-carbon sugar G3P. Along the way, reactions rearrange carbon atoms among intermediate compounds and use the ATP and NADPH produced by the light reactions. In this exercise, you will track carbon atoms through the Calvin cycle as required for the net production of one molecule of G3P.

For each intermediate compound in the Calvin cycle, identify the number of molecules of that intermediate and the total number of carbon atoms contained in those molecules. As an example, the output G3P is labeled for you: 1 molecule with a total of 3 carbon atoms. Labels may be used once, more than once, or not at all.

a. 3 molecues, 3 carbons total

b. 5 molecules, 15 carbons total

c. 3 molecules, 15 carbons total

d. 6 molecules, 18 carbons total

e. 1 molecule, 1 carbon total

f. 1 molecule, 5 carbons total

+2

Answers (1)

Know the Answer?

Lamar Mckee · Answer 1

d. 6 molecules, 18 carbons total

Explanation:

In a Calvin cycle 3CO₂ is combines with 3 RUBP to form 6 molecules of glyceraldehyde-3-phosphate (G3P). One molecule of G3P has three fixed carbon atoms, Thus to make one molecule of six carbon glucose molecules will take two molecules of G3P. Therefore six turns of the Calvin cycle required to make one glucose.

So, as per question, 6 molecules of G3P will required 18 carbons.