BIOLOGY
CARBOHYDRATES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a-1, 4
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b-1, 4
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a-1, 2
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b-1, 2
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Detailed explanation-1: -Lactose is composed of a molecule of galactose joined to a molecule of glucose by a -1, 4-glycosidic linkage. It is a reducing sugar that is found in milk. Sucrose is composed of a molecule of glucose joined to a molecule of fructose by an -1, -2-glycosidic linkage.
Detailed explanation-2: -Lactose is a disaccharide composed of one molecule each of glucose and galactose.
Detailed explanation-3: -Lactose is a reducing sugar composed of one molecule of D-galactose and one molecule of D-glucose joined by a -1, 4-glycosidic bond (the bond from the anomeric carbon of the first monosaccharide unit being directed upward).
Detailed explanation-4: -Lactose is the disaccharides which are present in milk. it is also called milk sugar. It is made up of two monosaccharides glucose and galactose. Lactose is formed by beta 1-4 condensation of two hexose molecules.
Detailed explanation-5: -Glucose forms glycosidic bonds with itself, fructose, and galactose to produce three nutritionally important disaccharides (Fig. 2-7): Sucrose: glucose + fructose; table sugar. Lactose: glucose + galactose; milk sugar.