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STD 11 - 9. Biomolecules — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 9. Biomolecules1 Mark
MCQ
Which one of the following is a non ­ reducing carbohydrate?
  • A
    Maltose
  • ✓
    Sucrose
  • C
    Lactose
  • D
    Ribose $5$-­phosphate
✓

Answer

Correct option: B.
Sucrose
b
(b) : In non­reducing sugars, a free aldehyde or ketonic group is absent. Sucrose is a non­reducing sugar formed by condensation of one molecule each of glucose and fructose with release of a water molecule. A glycosidic bond is established between carbon atom $1$ of glucose and carbon atom $2$ of fructose.

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