BIOMOLECULES AND ENZYMES

BIOLOGY

MONOSACCHARIDES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What kind of glycosidic linkage do sucrose have?
A
(alpha 1
B
(alpha 1
C
(Beta 1
D
(Beta 1
Explanation: 

Detailed explanation-1: -Sucrose is composed of a molecule of glucose joined to a molecule of fructose by an -1, -2-glycosidic linkage.

Detailed explanation-2: -The bond between the two sugars in sucrose is an alpha-1, 2-glycosidic bond.

Detailed explanation-3: -There are are two types of glycosidic bonds-1, 4 alpha and 1, 4 beta glycosidic bonds. 1, 4 alpha glycosidic bonds are formed when the OH on the carbon-1 is below the glucose ring; while 1, 4 beta glycosidic bonds are formed when the OH is above the plane.

Detailed explanation-4: -Sucrose: A disaccharide composed of -glucose and -fructose connected through an -1, -2-glycosidic linkage. -1-4 glycosidic linkages: Linkages in which carbon atoms 1 and 4 of the two monomers form a glycosidic bond.

Detailed explanation-5: -Cellulose is a linear homopolysaccharide of D-glucose units, which are linked together by beta-1, 4 glycosidic bonds.

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