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A RNA differs from DNA in all EXCEPT which of the following ways?

A. the presence of uracil
B. the 5'-3' orientation of the polynucleotide strand
C. the sugar molecule
D. the number of different functions performed

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eyitbay

Answer: B. the 5'-3' orientation of the polynucleotide strand .

The complimentary pairing of DNA molecules ensures 5' 3' and 3'[ 5 '  arrangement for correct pairing of purines and pyrimidine (Adenine E with thymine and cytosine with guanine) in opposite direction.  .

RNA only contains five prime and three prime only, but DNA contains both 5'3' and  3'5'.

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