Question

Sucrose is made of which of the following monosaccharides?

(a) α-D-glucose, α-D-fructose

(b) α-D-glucose, β-D-fructose

(c) β-D-glucose, α-D-fructose

(d) β-D-glucose, β-D-fructose

This question was addressed to me in an online quiz.

I'd like to ask this question from Biomolecules Carbohydrates in section Biomolecules of Chemistry – Class 12

Answer 1

The correct option is (b) α-D-glucose, β-D-fructose

Easy explanation: Sucrose is composed of α-D-glucose and β-D-fructose. These two are held together by an α,β-glycosidic linkage between C1 of glucose (pyranose) and C2 of fructose (furanose).