Which of the glycosidic linkage between galactose and glucose is present in lactose?
Biomolecules · Class 12 · JEE Main Previous Year Question
Which of the glycosidic linkage between galactose and glucose is present in lactose?
- a
of glucose and of galactose
- b✓
of galactose and of glucose
- c
of glucose and of galactose
- d
of galactose and of glucose
of galactose and of glucose
Step 1: Identifying Monosaccharide Linkage Points — Lactose is formed from and units.
Step 2: Glycosidic Bond Type — The linkage is a bond formed between of the galactose unit and of the glucose unit.
Step 3: Naming the Linkage — This is formally known as a glycosidic linkage. Correct option is (b).
Remember: In lactose, the galactose unit is always the non-reducing end, while the glucose unit provides the reducing end.
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