(a) Polysaccharides : These are the saccharides containing large number monosaccharides units joined together by glycosidic linkage they yield a large number of monosaccharides upon hydrolysis . eg:- starch, cellulose
(b) Denatured protein : Denatured protein are the protein when subjected to physical change like a change in temperature or chemical change like pH, the hydrogen bonds are disturbed and loses its biological activity. Since denaturation reactions are not strong enough to break the peptide bonds, the primary structure (sequence of amino acids) remains the same after a denaturation process, eg:- The coagulation of egg white on boiling.
(c) Essential amino acids : The amino acids which cannot be synthesized inside the body and must be obtained from diet taken by us are known as essential amino acids.eg:- Histidine, Valine etc.
(b) As amino acid contains both acidic and basic group present into them. i.e. COOH and NH2 in the same molecule can lose a proton and amino group can accept a proton, giving rise to dipolar ion.
Hence, shows amphoteric nature.
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