Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
A) as a hexose
B) as a disaccharide
C) as a polysaccharide
D) as a pentose
E) as a monosaccharide

Question

Quizplus · Accepted Answer

Lactose is a disaccharide because it is composed of two monosaccharides, glucose and galactose, joined together by a glycosidic linkage.

Lactose, a Sugar in Milk, Is Composed of One Glucose