Answer:
Carbohydrate polymer is consists of several monosaccharides linked together by glycosidic linkages to form polysaccharide chains.
Directionality is the end to end chemical orientation of a single strand of nucleic acid and it influences the function of the polymer.
Carbohydrates are consist of sugar monomer with OH and CH2OH groups. The directionality helps to determine the secondary structure of the carbohydrate and identify the subcellular and intramembrane molecules position of OH and CH2OH groups.
For example: cellulose and starch, both are carbohydrates but due to difference in the linkage they perform different function.
