Biomolecules Question 84
84. Lactose is composed of
(a) Glucose + Glucose
(b) Glucose + Fructose
(c) Fructose + Galactose
(d) Glucose + Galactose
Show Answer
Answer : d
Hints & Solutions
(d) Lactose is a disaccharide that consists of $\beta$-D-galactose and $\beta$ - $D$-glucose molecules bonded through a $\beta 1-4$ glycosidic linkage. Lactose makes up around $2-8 %$ of the solids in milk. The name comes from the Latin word for milk, plus the -ose ending used to name sugars.
