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Q.

Lactose is formed by the union of

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a

one molecule of glucose and one molecule of galactose

b

two molecules of galactose

c

two molecules of glucose

d

one molecule of glucose and one molecule of fructose

answer is B.

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Detailed Solution

The major dietary source of galactose is lactose, a disaccharide formed from one molecule of glucose plus one of galactose.

Lactose is formed by the union of one molecule of each of glucose and galactose.

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