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  4. The basic unit of nucleic acid is

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Q. The basic unit of nucleic acid is

AIPMTAIPMT 1991Biomolecules

Solution:

The nucleic acids (DNA and RNA) are the molecules having complex structure and very high molecular weights. The nucleic acid is composed of a large number of nucleotide molecules joined into a linear, unbranched chain. Nucleotide is an organic compound consisting of a nitrogen-containing purine or pyrimidine base linked to a sugar (ribose or deoxyribose) and a phosphate group.