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

C - 1

of glucose and

C - 6

of galactose

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C - 1

of galactose and

C - 4

of glucose

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C - 1

of glucose and

C - 4

of galactose

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C - 1

of galactose and

C - 6

of glucose

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Solution

The correct option is B $C - 1$ of galactose and $C - 4$ of glucose
Structure of lactose:

Therefore, in lactose $C - 1$ of galactose is connected to $C - 4$ of glucose via glycosidic linkage.

Suggest Corrections

Similar questions

Match the List-I and List-II:

List I (Saccharides)	List II (Formed by)
(A) Sucrose	(i) $β$ -D glucose $C_{1} - C_{4}$ glycosidic linkage
(B) Lactose	(ii) $α$ -D glucose, $β$ -D fructose $C_{1} - C_{2}$ glycosidic linkage
(C) Cellulose	(iii) $β$ -D glucose, $β$ -D galactose $C_{1} - C_{4}$ glycosidic linkage

Regarding lactose, some statements are given below

A) On hydrolysis, lactose gives β-D-galactose and β-D-glucose

B) In lactose C₁ of β-D-galactose has acetal structure and C₁ of β-D-glucose has hemiacetal structure

C) In lactose molecule, β-D-galactose is a non-reducing unit and β-D-glucose is reducing unit

The correct statements are

C_{1} - C_{2}

β

α

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