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Carbohydrates are polyhydroxy aldehydes ...

Carbohydrates are polyhydroxy aldehydes or ketones or substances which generally give these upon hydrolysis. These have been classified as mono, oligo or polysaccharides. These are all optically active since they contain number of chiral carbon atoms in their molecules. Further, the carbohydrates may be either reducing or non-reducing in nature. In disaccharides and polysaccharides, the monosaccharides are linked to each other by Glycosidic linkages.
The `alpha` and `beta` forms of D(+) Glucose are known as

A

Enantiomers

B

Anomers

C

Epimers

D

Diastereomers

Text Solution

Verified by Experts

The correct Answer is:
B
These are anomers and differ in the configuration of H atom and OH group along `C_(1)` only.
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Disaccharides and Polysaccharides

Carbohydrates are polyhydroxy aldehydes or ketones or substances which generally give these upon hydrolysis. These have been classified as mono, oligo or polysaccharides. These are all optically active since they contain number of chiral carbon atoms in their molecules. Further, the carbohydrates may be either reducing or non-reducing in nature. In disaccharides and polysaccharides, the monosaccharides are linked to each other by Glycosidic linkages. In the polysacharides, the monosaccharides are linked to each other by :

In a polysaccharide chain the individual monosaccharides are linked by which bond :-

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Given one example each for a disaccharide and a polysaccharide.