Question

dna and rna are both nucleic acids, but their structures differ in several important ways as illustrated in the image below. which of the following correctly describe differences between dna and rna? select two choices that are correct. dna is usually single - stranded, while rna is usually double - stranded. dna contains deoxyribose sugar, while rna contains ribose sugar. dna uses the nitrogen base uracil, while rna uses thymine. dna remains mostly in the nucleus, while rna can move to the cytoplasm.

Explanation:

• For option B: DNA has deoxyribose (lacks an oxygen atom compared to ribose in RNA), which is a key structural difference.
• For option D: DNA is mainly in the nucleus (storage of genetic info), RNA (e.g., mRNA) moves to cytoplasm for protein synthesis.
• Option A: Incorrect. DNA is usually double - stranded, RNA is usually single - stranded.
• Option C: Incorrect. DNA uses thymine, RNA uses uracil.

Answer:

• B. DNA contains deoxyribose sugar, while RNA contains ribose sugar.
• D. DNA remains mostly in the nucleus, while RNA can move to the cytoplasm.