A metabolic pathway that is the process of using sunlight to make glucose, a two stage process  Light-dependent Reactions (LDR) ▪ Requires Light ▪ Produces ATP and NADPH ▪ Occurs in the thylakoid membranes  Light-independent Reactions (LIR) ▪ Uses ATP and NADPH as energy ▪ Produces glucose ▪ Occurs in the stroma