The Living World 8th Edition by George Johnson

تمرين 8

The overall purpose of the Calvin cycle is to
A) generate molecules of ATP.
B) generate NADPH.
C) build sugar molecules.
D) produce oxygen.
If the Calvin cycle runs through six turns,
A) all of the fixed carbon will end up in two molecules of glucose.
B) 12 carbons will be fixed by the process.
C) enough carbon will be fixed to make one glucose, but they will not all be in the same molecule.
D) one glucose will be converted into six CO₂.
Why do plants employ NADPH in photosynthesis? Why do they not use NADH to transport energetic electrons, as the Krebs cycle does?