Which of the following answer choices describes a difference between DNA and RNA?
BIOLOGYSAT 2021
Which of the following answer choices describes a difference between DNA and RNA?
- A. RNA has a main sugar of ribose while DNA has a main sugar of deoxyribose
- B. All of these
- C. RNA exists almost exclusively as a single stranded nucleic acid, while DNA generally is double stranded.
- D. RNA uses uracil nucleotides instead of thymine nucleotides
Correct Answer: B. All of these
Explanation
There are generally considered to be three major differences between DNA and RNA. 1) DNA has a main sugar of deoxyribose and RNA has a main sugar of ribose, 2) RNA uses uracil instead of thymine, and 3) RNA is almost exclusively a single-stranded nucleic acid. Further, DNA is generally the template that an organism uses to create RNA (except in specific organisms which use reverse transcriptase and use RNA to create DNA).
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