Light is needed to excite electrons in the electron transport chain to commence photosynthesis.
That is the dark reaction. It needs no light
Chlorophyll is NOT really a catalyst. The presence of chlorophyll in the absence of light does not catalyze photosynthesis. Chlorophyll plays a part in photosynthesis, it captures light energy.
A.T.P. and N.A.D.H are formed during light reaction.
The light bar
light independent reactions
cell wall
The light phase. THE Calvin cycle....
Mitochondria
light, photo means light. Photograph - light picture (roughly) photosynthesis is synthesis of energy (glucose) from light
stroma
Chlorophyll is NOT really a catalyst. The presence of chlorophyll in the absence of light does not catalyze photosynthesis. Chlorophyll plays a part in photosynthesis, it captures light energy.
Photosynthesis has two phases: the light phase and the dark phase. The light phase happens in the chloroplasts, which are the structures that contain chlorophyll.