Which of the following is not a difference between RNA and DNA?
A) RNA has uracil; DNA has thymine.
B) RNA has ribose; DNA has deoxyribose.
C) RNA has five bases; DNA has four.
D) RNA is a single polynucleotide strand; DNA is a double strand.
E) RNA molecules are smaller than human chromosomal DNA molecules.

Question

Quizplus · Accepted Answer

RNA and DNA both have four bases in common (adenine, guanine, cytosine, and thymine/uracil). Option A refers to the presence of uracil in RNA and thymine in DNA, option B refers to the difference in sugar present in RNA (ribose) and DNA (deoxyribose), option D refers to the difference in structure (RNA is usually single-stranded while DNA is double-stranded), and option E refers to the difference in size (RNA is generally smaller than DNA found in chromosomes). The only option that is incorrect is C, which states that RNA has five bases while DNA has four, which is untrue.

Which of the Following Is Not a Difference Between RNA