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  4. Lactose is composed of

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Q. Lactose is composed of

AIPMTAIPMT 1998Biomolecules

Solution:

Lactose is popularly known as milk sugar. It is a disaccharide composed of one molecule of glucose and one molecule of galactose. The covalent bond that joins these two monosaccharide units is called glycosidic bond or glycosidic linkage. It is a reducing sugar.