How do the light dependent reactions of photosynthesis relate to the Calvin cycles?
The light dependent reactions create compounds which store the
energy necessary for the Calvin Cycle to take place. This energy is
stored in ATP (Adenosine Triphosphate), among other compounds,
during the LDR. In the Calvin cycle, these are broken down, which
releses energy. The energy released is used to create bonds between
the parts of Glucose
Another way to explain it in a simpler way is, when the light
reaction has gone through once, it has produced NADH and ATP. These
are nessisary for the making of glucose which is what the Calvin
cycle does. The NADH and ATP are what power the Calvin cycle.