Question 11 • 26-27 Biology A
DNA uses the base thymine, while RNA uses uracil in its place. This difference helps distinguish their sequences and roles; for example, DNA stores genetic information, while RNA helps use that information to make proteins. Choice A reverses the sugars: DNA contains deoxyribose and RNA contains ribose. Choices B and D also reverse or misstate where these molecules are typically found and how they are structured.
AI-written and checked against the verified answer.