This monograph deals with the light reaction pathway in photosynthesis. The photophysico-chemical events are presented in the order of their occurrence, beginning with the collection of sunlight by antenna systems, ending with the reduction of CO to carbohydrates. Relationships between the structural 2 properties and kinetic effects of primary and secondary events spanning time 12 domains in the range 1O- _ls are explored. Photosynthesis is examined in terms of a light-induced redistribution of reaction intermediates common to the biosynthesis and metabolic degradation of carbohydrates. The...