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Standard XII

Chemistry

Glycoside Formation

The glycosidi...

Question

The glycosidic linkage involved in linking the glucose units in amylose part of starch is:

C_{1} - C_{4} - β

linkage

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C_{1} - C_{6} - β

linkage

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C_{1} - C_{6} - α

linkage

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C_{1} - C_{4} - α

linkage

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Solution

The correct option is A $C_{1} - C_{4} - α$ linkage
Answer:- (D) $C_{1} - C_{4} - α$ linkage
Amylose is a long unbranched chain with 200-100 $α$ -D-(+)-glucose units held by $C_{1} - C_{4}$ glycosidic linkage.

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Similar questions

Q. Glycogen is a branched chain polymer of

α - D -

glucose units in which chain is formed by

C_{1} - C_{4}

glycosidic linkage whereas branching occurs by the formation of

C_{1} - C_{6}

glycosidic linkage. Structure of glycogen is similar to ____________

Glycogen is a branched chain polymer of $α - D$ glucose units in which chain is formed by C1-C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to .............. .
(a) amylose (b) amylopectin (c) cellulose (d) glucose

Match the List-I and List-II:

List I (Saccharides)	List II (Formed by)
(A) Sucrose	(i) $β$ -D glucose $C_{1} - C_{4}$ glycosidic linkage
(B) Lactose	(ii) $α$ -D glucose, $β$ -D fructose $C_{1} - C_{2}$ glycosidic linkage
(C) Cellulose	(iii) $β$ -D glucose, $β$ -D galactose $C_{1} - C_{4}$ glycosidic linkage

The statement 'Sucrose has

C_{1} - C_{2}

glycosidic linkage between

β

-D-Glucose &

α

-D-Fructose' is

Three structures are given below in which two glucose units are linked.
Which of these linkages between glucose units are between $C_{1} a n d C_{4}$ and which linkages are between $C_{1} a n d C_{6} ?$

(a) (i) is between C1 and C4, (ii) and (iii) are between C1 and C6
(b) (i) and (ii) are between C1 and C4, (iii) is between C1 and C6
(c) (i) and (iii) are between C1 and C4 (ii) is between C1 and C6
(d) (i) and (iii) are between C1 and C6, (ii) is between $C_{1} a n d C_{4}$

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The glycosidic linkage involved in linking the glucose units in amylose part of starch is:

The correct option is A C1−C4−α linkageAnswer:- (D) C1−C4−α linkageAmylose is a long unbranched chain with 200-100 α-D-(+)-glucose units held by C1−C4 glycosidic linkage.

The correct option is A $C_{1} - C_{4} - α$ linkage
Answer:- (D) $C_{1} - C_{4} - α$ linkage
Amylose is a long unbranched chain with 200-100 $α$ -D-(+)-glucose units held by $C_{1} - C_{4}$ glycosidic linkage.