Question

Lactose is composed of

(a) glucose + glucose

(b) glucose + fructose

(c) fructose + galactose

(d) glucose + galactose

Answer 1

Correct option (d) glucose + galactose

Explanation :

Lactose (C₁₂H₂₂O₁₁) is a disaccharide found in mammalian milk. It comprises of galactose and glucose units which are linked together by β, 1-4 glycosidic bonds. It is a reducing sugar.