Which Statements About Differences Between DNA and RNA Are True $\beta$

question 29

Multiple Choice

Which statements about differences between DNA and RNA are true?
I. The sugar unit is $\beta$ -D-ribose in RNA and $\beta$ -2-deoxyribose in DNA.
II. The pyrimidine bases are uracil and thymine in RNA and cytosine and thymine in DNA.
III. RNA is single stranded, DNA double stranded.
IV. The phosphodiester groups join the 3' to 5' ends of sugars in RNA, and join the 5' to 3' ends
In DNA.

• A) I, II
• B) I, III
• C) II, III
• D) III, IV

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