Question

Which of these is a major chemical difference between DNA and RNA?

Group of answer choices

DNA uses thymine, RNA uses uracil

DNA uses cytosine, RNA uses uracil

DNA uses adenine, RNA uses thymine

DNA uses ribose, RNA uses deoxyribose

Answer 1

DNA uses thymine, RNA uses uracil- This is correct as DNA uses thymine and RNA uses uracil.

DNA uses cytosine, RNA uses uracil- This is incorrect as cytosine is present in both.

DNA uses adenine, RNA uses thymine-This is incorrect as RNA lacks thymine.

DNA uses ribose, RNA uses deoxyribose-. This is incorrect .RNA has ribose and DNA has deoxyribose.

So, the correct answer is A.