Which of these labels matches the structure of the partial RNA strand shown?
Correct answer: A. I. Phosphate; II. Ribose; III. Nitrogenous base
- A. I. Phosphate; II. Ribose; III. Nitrogenous base
- B. I. Phosphate; II. Nitrogen base; III. Ribose
- C. I. Nitrogenous base; II. Phosphate; III. Ribose
- D. I. Ribose; II. Nitrogen base; III. Phosphate
Explanation
The correct answer is Option A: I. Phosphate; II. Ribose; III. Nitrogenous base. This sequence accurately represents the structure of an RNA nucleotide, where the phosphate group attaches to the ribose sugar, which is connected to the nitrogenous base.The other options are incorrect because they misplace one or more of these components in the sequence of the RNA structure:Option B incorrectly places the nitrogenous base before the ribose.Option C incorrectly lists the nitrogenous base first and the phosphate second.Option D incorrectly lists the ribose first and the phosphate last.
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