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  4. The letter ‘D’ in D-carbohydrates represents

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Q. The letter ‘$D$’ in $D$-carbohydrates represents

KEAMKEAM 2017Biomolecules

Solution:

D indicate the configuration of carbohydrate. it represents the position of second last -OH group in any carbohydrates. If -OH is present on right side then it is called D type configuration and if it is present on left side then it is called L type configuration.