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  • (a) Give any one property of glucose that cannot be explained by the open chain structure (b) Compare amylase with amylopectin in terms of constituting structure. (c) Why do amino acids show amphoteric behaviour

(a) Give any one property of glucose that cannot be explained by the open chain structure.

(b) Compare amylase with amylopectin in terms of constituting structure.

(c) Why do amino acids show amphoteric behaviour ?

 

 

 

 
 
 
 
 

Answers (1)

(1) One property of glucose that cannot be explained by the open chain structure is despite having -CHO group, it does not give 2,4 - DNP test.

(2) Amylose is a linear polymer of \alpha -D glucose units joined together by glycosidic linkages involving C_{1} or one glucose and C_{4} of next. It can have 100-3000 glucose units. It is soluble in water.

Amylopectin is highly branched polymer which is insoluble in water . It is composed of 25-30 D-glucose joined by \alpha -D-glycosidic linkages between  C_{1} of next . There chains are connected with each other , by 1,6 - linkages.

(3) Amino acids show amphoteric behaviour because they circuits in witter ionic form, in acidic solution they act as cations and in alkaline solution they act as anions.

Posted by

Sumit Saini

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