DNA differs from RNA in that DNA typically:

• A. Contains the bases adenine, guanine, cytosine, and uracil
• B. Contains ribose sugar and uses uracil instead of thymine
• C. Contains deoxyribose sugar and uses thymine instead of uracil
• D. Is usually single-stranded and less chemically stable than RNA

Answer: (C)

Verified step by step guidance

1. Identify the key structural components that differentiate DNA from RNA, focusing on the sugar and nitrogenous bases present in each molecule.
2. Recall that DNA contains a sugar called deoxyribose, whereas RNA contains ribose; this difference affects the stability and structure of the molecules.
3. Understand that DNA uses the base thymine (T) instead of uracil (U), which is found in RNA; this is a critical distinction in their nitrogenous base composition.
4. Note that DNA is typically double-stranded and more chemically stable, while RNA is usually single-stranded and less stable due to the presence of ribose and uracil.
5. Combine these points to determine that the correct statement about DNA is that it contains deoxyribose sugar and uses thymine instead of uracil.