RNA is the step between DNA and protein synthesis. With a few differences, RNA is chemically similar to DNA. RNA contains ribose as its sugar and has a nitrogenous base of uracil rather than thymine. DNA contains deoxyribose as its sugar. Each nucleotide along a DNA strand has deoxyribose as its sugar and A, G, C, or T as its base, while each nucleotide along an RNA strand has ribose as its sugar and A, G, C, or U as its base. RNA mole