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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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A2Z-BIOMOLECULES-Section D - Chapter End Test
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  7. Glucose and fructose can be disntiguished by

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  8. D-(+)-Glucoseoverset(5(CH(4)CO)O)rarrD-(+) glucose pentaacetate. Whi...

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  9. Compounds I and II may be grouped as

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  10. Which of the following statement is correct regardiing the drawbacks o...

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  11. What will happen when D-(+)- glucose is treated with methanolic HCl fo...

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  12. Which is true acidic character of hydroxyl groups of sugars and hydrox...

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  13. which of the following forms cationic micelles above certain concentra...

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  14. Which of the nitrogenof histidine is first protonated ?

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  19. In the following series of reactions, compound Z can be Z+NH(3) over...

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  20. Anomers are those stereoisomers which differ in the configuration at

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  21. In osazone formation, glucose reacts with three molecules of phenylhyd...

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