The sugar that is produced in photosynthesis is a glucose. - Glucose can be used to provide energy for cellular activity. - Excess of glucose is transformed into starch. Starch is transported into storage organs. - Glucose can be transformed into cellulose, pectin, and chitin. These molecules are structural materials for the cell walls. - Fats and amino acids can be formed from glucose. These molecules can serve as structural materials or can be stored.