1.

The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?

Answer»

`1^(st)`
`2^(ND)`
`3^(rd)`
`4^(th)`

Solution :RNA has D (-)-Ribose and the DNA has 2-Deoxy D (-)-ribose as the carbohydrate unit.

From the STRUCTURES it is clear that 2nd CARBON in DNA do not have OH GROUP.


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