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NEET2011ChemistryBiomoleculesActual

Lactose is made of

Options

  1. A-D-glucose only
  2. B-D-glucose and -D-glucose
  3. C-D-galactose and -D-glucose
  4. D-D-galactose and -D-glucose

Correct answer

D. -D-galactose and -D-glucose

Step-by-step solution

Lactose (milk sugar) is a disaccharide, obtained by the condensation of one molecule of -D-galactopyranose and one molecule of -D-glucopyranose.

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