Define the following terms:
(a) Polysacchrides
(b) Nucleotides
(a) Polysacchrides are the carbohydrates that yield a large number of monosaccharide units on hydrolysis. Example - Starch , cellulose
(b) Nucleotides are the monomers units of nuclei acid which consists of a pentose sugar, a nitrogen base and phosphate group.