Which of the following is not a disaccharide?

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Multiple Choice

Which of the following is not a disaccharide?

Explanation:
Disaccharides are molecules made from two monosaccharide units linked together. Sucrose is glucose plus fructose, lactose is glucose plus galactose, and maltose is two glucose molecules. Glucose is a single sugar, a monosaccharide, so it is not a disaccharide. Disaccharides can be split by hydrolysis into two monosaccharides, whereas glucose itself does not consist of two sugar units.

Disaccharides are molecules made from two monosaccharide units linked together. Sucrose is glucose plus fructose, lactose is glucose plus galactose, and maltose is two glucose molecules. Glucose is a single sugar, a monosaccharide, so it is not a disaccharide. Disaccharides can be split by hydrolysis into two monosaccharides, whereas glucose itself does not consist of two sugar units.

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