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20 March, 19:26

Which of these is a difference between a DNA and an RNA molecule?

A. DNA contains nitrogenous bases, whereas RNA contains phosphate groups.

B. DNA is usually double-stranded, whereas RNA is usually single-stranded.

C. DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids.

D. DNA contains uracil, whereas RNA contains thymine.

E. DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars.

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  1. 20 March, 20:11
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