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Biomolecules — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryBiomolecules3 Marks
Question
Lactose act as reducing sugar. Justify this statement.
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Answer

  1. Lactose is a disaccharide and contains one galactose unit and one glucose unit.
  2. In lactose, the β – D galactose and β – D glucose are linked by β – 1, 4 – glycosidic bond.
  3. The aldehyde carbon is not involved in the glycosidic bond hence it retains its reducing property and is called a reducing sugar.

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