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Explainthe following terms : (i) Invert sugar(ii) Polypeptides. |
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Answer» Solution :(i)Invert sugar : SUCROSEIS dextrorotatorybut after hydrolysis it givendextrorotatory glucose and laevorotatory fructose . Laevorotation of FRUCTOSEIS morethan thedextrorotationof glucose. Thereforethe mixtureis laveorotatory. Thushydrolysis of sugarbrings about inversion of sign of rotation formdextro (+) to laevo (-). The PRODUCT OBTAINED is calledinvert sugar. (ii) Polypeptides : Peoptide linkageis an amideformedbetween - COOH group and `- NH_(2)` group. The reactionbetween twomolecules of SIMILAR ordifferent amino acidsprocceds through the combination of the amino group of onemolecule withthe carboxyl group of the otherwhen itsthe numberof suchamino group is ten m thenthe products are called polyeptides. 
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