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Lactose is made of:...

Lactose is made of:

A

`beta-D` galactose and `beta-D-`glucose

B

`alpha-D` galactose and `beta-D-`glucose

C

`beta-D` galactose and `alpha-D-`glucose

D

`alpha-D` galactose and `alpha-D-`glucose

Text Solution

Verified by Experts

The correct Answer is:
B

Lactose is obtained by the condensation of one molecule of `beta-D`-galactopyranose `(C_(1) - beta)` unit and one molecule of `beta-D` glucose `(C_(4) - beta)` unit.
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Knowledge Check

  • Lactose is a

    A
    Trisaccharide
    B
    Monosaccharide
    C
    Disaccharide
    D
    Tetrasaccharide
  • lactose is made up of

    A
    `beta`glucose & glucose
    B
    glucose & mannose
    C
    `beta` glucose & `beta` glactose
    D
    glucose & fructose
  • Lactose is a polysaccharide of

    A
    glucose and fuctose
    B
    glucose and glucose
    C
    glucose and galactose
    D
    galactose and galactose
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