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Solution


Q.

Match List I with List II                             [2025]

  List I   List II
  (Carbohydrate)   (Linkage Source)
(A) Amylose (I) β–C1–C4, plant
(B) Cellulose (II) α–C1–C4, animal
(C) Glycogen (III) α–C1–C4. α–C1–C6, plant
(D) Amylopectin (IV) α–C1–C4, plant

 

Choose the correct answer from the options given below:
1 (A)-(II), (B)-(III), (C)-(I), (D)-(IV)  
2 (A)-(IV), (B)-(I), (C)-(III), (D)-(II)  
3 (A)-(III), (B)-(II), (C)-(I), (D)-(IV)  
4 (A)-(IV), (B)-(I), (C)-(II), (D)-(III)  

Ans.

(4)

(A) (D) Starch is the main storage polysaccharide of plants. Amylose and Amylopectin are two components of starch. Amylose is a long unbranched chain with 200–1000 α-D-(+)-glucose units held together by C1–C4 glycosidic linkage. Amylopectin is insoluble in water and constitutes about 80–85% of starch. It is a branched chain polymer of α-D-glucose units in which chain is formed by C1–C4 glycosidic linkage whereas branching occurs by C1–C6 glycosidic linkage.

(B) Cellulose is a predominant constituent of the cell wall of plant cells. Cellulose is a straight chain polysaccharide composed only of β-D-glucose units which are joined by glycosidic linkage between C1 of one glucose unit and C4 of the next glucose unit.

(C) The carbohydrates are stored in the animal body as glycogen. It is also known as animal starch because its structure is similar to amylopectin and is rather more highly branched.