One tablespoon of standard sucrose, or table sugar, contains approximately 48 calories and about 12 grams of sugar.
Starch is a polymer of the monosaccharide glucose: Starch is the principal polysaccharide used by plants to store glucose for later use as energy. Plants often store starch in seeds or other specialized organs; for example, common sources of starch include rice, beans, wheat, corn, potatoes, and so on.
In green plants starch is produced by photosynthesis; it is one of the chief forms in which plants store food. It is stored most abundantly in tubers (e.g., the white potato), roots (e.g., the sweet potato), seeds, and fruits; it appears in the form of grains that differ in size, shape, and markings in various plants.The plant source can usually be identified by microscopic examination of the starch grains.tarch is important because we eat it! Starch is found in potatoes, and in grains such as corn and wheat. Starch is made up of glucose repeat units. In your body, special proteins called enzymes (which are also polymers, by the way) break starch down into glucose, so your body can burn it for energy.