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14. Biomolecules
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Q33 of 71 Page 209

Under what conditions glucose is converted to gluconic and saccharic acid?

Glucose is converted to gluconic acid which is a six carbon carboxylic acid, on treatment with a mild oxidizing agent like Br2 water.

Glucose is converted to saccharic acid, which is a dicarboxylic acid, on treatment with nitric acid.


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31

In nucleoside a base is attached at 1C position of sugar moiety. Nucleotide is formed by linking of phosphoric acid unit to the sugar unit of nucleoside. At which position of sugar unit is the phosphoric acid linked in a nucleoside to give a nucleotide?

32

Name the linkage connecting monosaccharide units in polysaccharides.

34

Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule are also considered for classification. In which class of monosaccharide will you place fructose?

35

The letters ‘D’ or ‘L’ before the name of a stereoisomer of a compound indicate the correlation of configuration of that particular stereoisomer. This refers to their relation with one of the isomers of glyceraldehyde. Predict whether the following compound has ‘D’ or ‘L’ configuration.

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14. Biomolecules
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