The carbohydrate 'Ribose' present in DNA, is A. A pentose sugar B. present in pyranose from C. in 'D' configuration D. a reducing sugar, when free E. in $\alpha$-anomeric form. Choose the correct answer from the options given below:

Question

Dr. Abubacker · Accepted Answer

[Solution by Dr. Abubacker] The sugar unit is a pentose (A), it has the D-configuration (C) and, when free (not glycosidically bonded), it is a reducing sugar (D). It occurs in the furanose form (not pyranose) and as the $\beta$-anomer in nucleic acids, so B and E are false. So A, C and D only. (Medium confidence: the question says 'Ribose in DNA' although DNA contains 2-deoxyribose; the answer follows the key.) Answer (2).

Q. The carbohydrate 'Ribose' present in DNA, is A. A pentose sugar B. present in pyranose from C. in 'D' configuration D. a reducing sugar, when free E. in $\alpha$-anomeric form. Choose the correct answer from the options given below:

Explanation

Reviewed by Dr. Abubacker

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