which of these is the difference between a DNA and a RNA molecule
A. DNA contains nitrogenous bases, whereas RNA contains phosphate groups. B. DNA is double-stranded, whereas RNA is single-stranded C. DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars.D. DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids.redominant structure: DNA-Typically a double-stranded molecule with a long chain of nucleotides. RNA-A single-stranded molecule in most of its biological roles and has a shorter chain of nucleotides. Source(s): http://www.diffen.com/difference/DNA_vs_... Rynnie Â· 5 years ago. Thumbs up.