Although the chemical equation appears straight forward
the process actually involves several "steps" occurring
in two major groups of reactions.


What are these groups of reactions


The following diagram represents what occurs in the
light reactions. Notice that the sun's light energy
is needed to start this portion.



As light energy (in the form of photons) reaches a plant,
chlorophyll molecules forming a light harvesting complex
absorb that energy, exciting electrons. These electrons
move along an electron transport chain, eventually
transferring their energy into the bonds of ATP and NADPH.

ATP and NADPH act as highly charged energy carriers
ready to provide energy to continue photosynthesis
in the dark reactions.


Do the dark reactions have to take place in the dark - at night