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Question: Answered & Verified by Expert
Lactose is made of
ChemistryBiomoleculesJIPMERJIPMER 2011
Options:
  • A $\alpha$-D-glucose only
  • B $\alpha$-D-glucose and $\beta$-D-glucose
  • C $\alpha$-D-galactose and $\beta$-D-glucose
  • D $\beta$-D-galactose and $\beta$-D-glucose
Solution:
2306 Upvotes Verified Answer
The correct answer is: $\beta$-D-galactose and $\beta$-D-glucose
Lactose (milk sugar) is a disaccharide, obtained by the condensation of one molecule of $\beta$-D-galactopyranose and one molecule of $\beta$-D-glucopyranose.

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