In that light, reactions to the "bookless" Stanford library seem to be missing the point.
Photosynthesis comprises both light reactions and dark reactions (or Calvin cycle).
Several steps require the ATP or NADPH generated by the light reactions.
Light reactions comprise two interdependent systems, called photosystems I and II.
Light reactions occur in the grana and dark reactions in the stroma.
In Oxygenic Photosynthesis: The Light Reactions (eds Ort, D. R. & Yocum, C. F.) 503, 213 247 (Kluwer Academic, 1996).
This structure provides a solid basis for the detailed examination of the light reactions that occur during bacterial photosynthesis.
During the light reactions, light energy is converted into the chemical energy needed for the dark reactions.
Light reactions consist of several hundred light-absorbing pigment molecules so arranged as to maximize the gathering of light energy.
The light reactions, the first stage of photosynthesis, convert light energy into chemical energy (ATP and NADPH).
These small pieces of lamellae were then fragmented into pieces so small that they performed only the light reactions of the photosynthetic process.
