There are several key differences between DNA and RNA, the two main types of nucleic acid. Identify the statement below that correctly describes a difference between RNA and DNA.(1 point)

Question

Responses

DNA is a single-stranded molecule whereas RNA is a double-stranded molecule in cells.
DNA is a single-stranded molecule whereas RNA is a double-stranded molecule in cells.

DNA uses ribose while RNA uses deoxyribose as the sugar in the molecule’s backbone.
DNA uses ribose while RNA uses deoxyribose as the sugar in the molecule’s backbone.

Adenine binds with the nitrogen base thymine in DNA while it binds with uracil in RNA.
Adenine binds with the nitrogen base thymine in DNA while it binds with uracil in RNA.

DNA uses phosphate groups to link nucleotides together whereas RNA uses ketone groups.

Answer 1

The statement that correctly describes a difference between RNA and DNA is:

Adenine binds with the nitrogen base thymine in DNA while it binds with uracil in RNA.

This statement accurately reflects one of the key differences between DNA and RNA. In DNA, adenine (A) pairs with thymine (T), while in RNA, adenine pairs with uracil (U).

The other statements are incorrect because:

• DNA is a double-stranded molecule, whereas RNA is typically single-stranded.
• DNA uses deoxyribose, while RNA uses ribose as the sugar in their respective backbones.
• Both DNA and RNA use phosphate groups to link nucleotides together; they do not use ketone groups for this purpose.