TS EAMCET · Chemistry · Biomolecules
Lactose is disaccharide of
- A \(\alpha\)-D -glucose and \(\alpha-D\)-fructose
- B \(\beta-D\)-glucose and \(\beta\)-D -galactose
- C \(\alpha-D\)-glucose and \(\beta-D\)-ribose
- D \(\alpha-D\)-glucose and \(\beta-D\)-galactose
Answer & Solution
Correct Answer
(B) \(\beta-D\)-glucose and \(\beta\)-D -galactose
Step-by-step Solution
Detailed explanation
Lactose is a disaccharide of \(\beta-\mathrm{D}(+)\)-glucose and \(\beta-D(+)\)-galactose. These monosaccharides are joined together with \(\beta-1,4\)-glycosidic linkage. It is a reducing sugar.
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