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JEE Main 202125 FebruaryMorning Shift
Exam
JEE Main
Year
2021
Date
25 February
Shift
Morning Shift
Subject
Chemistry
Chapter
Biomolecules

JEE Main 2021 · 25 February · Morning Shift · Chemistry · Biomolecules

Which of the glycosidic linkage between galactose and glucose is...

Which of the glycosidic linkage between galactose and glucose is present in lactose?Which of the glycosidic linkage between galactose and glucose is present in lactose?

Options

  1. AC−1C - 1 of glucose and C−4C - 4 of galactose
  2. BC−1C - 1 of glucose and C−6C - 6 of galactose
  3. CC−1C - 1 of galactose and C−4C - 4 of glucose
  4. DC−1C - 1 of galactose and C−6C - 6 of glucose

Correct answer

C. C−1C - 1 of galactose and C−4C - 4 of glucose

Step-by-step solution

Lactose is composed of a molecule of galactose joined to a molecule of glucose by a β-1,4-glycosidic linkage. It is a reducing sugar that is found in milk.

Which of the glycosidic linkage between galactose and glucose is present in lactose?

In lactose linkage is formed between C1{C}_{1} of galactose and C4{C}_{4} of glucose.

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