While I can see the design of the contractile motion system, I do not fully understand how the ATP binds and fuels the system. The presence of carbohydrates are important biologically because they are required in both photosynthesis and respiration. They are categorized by the number of sugar units and their stereochemistry. The number of possible stereoisomers is dependent upon the number of stereocenters contained within the molecule. Thus the larger the sugar the exponentially larger numbers of possible stereoisomers.
Sugar phosphates are important intermediates in metabolism, functioning as activation synthases.
Glycosaminoglycans are important as connective tissue. Cellulose is the major polysachharide in woody and fibrous plants. It contains primarily a linear polymer of D-glucose. While similar structurally to starch, animals who can cleave starch molecules cannot cleave cellulose. Saccharide cahins can be linked to proteins through glycan bonds.