Apply what you know of the relationship between the light-capturing reactions and the Calvin cycle to calculate the number of photons used to produce a new G3P and regenerate RuBP. (Assume 1 ATP is produced for each pair of electrons used to form NADPH.)

The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at night. Why? (Explain your answer.)a. It is often too cold at night for these reactions to take place.b. Carbon dioxide concentrations decrease at night.c. The Calvin cycle depends on products of the light reactions.d. Plants usually close their stomata at night.

Describe the three phases of the Calvin cycle and how the products of the light-capturing reactions participate in this process.

Which of the following does not occur during the Calvin cycle?a. carbon fixationb. oxidation of NADPHc. consumption of ATPd. release of oxygen

Describe the three phases of the Calvin cycle and how the products of the light-capturing reactions participate in this process.

The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at night. Why?