Question

Which statement about DNA and RNA is NOT true?

a)DNA sugars lack an O atom compared to RNA sugars.
b)DNA contains the bases A, G, C, and T, while RNA contains those four bases plus U.
c)Both DNA and RNA include pyrimidine and purine bases.
d)Both DNA and RNA nucleotides include 5-carbon sugars.
e)Both DNA and RNA contain the bases A, G, and C.

Answer 1

The statement "DNA contains the bases A, G, C, and T, while RNA contains those four bases plus U" is not true because RNA contains uracil (U) instead of thymine (T), which is found in DNA.

Step-by-step explanation:

The question asks which statement about DNA and RNA is NOT true. The incorrect statement is "b) DNA contains the bases A, G, C, and T, while RNA contains those four bases plus U." The true differences between DNA and RNA include the sugars present in their nucleotide building blocks and the nitrogenous bases they use. DNA contains deoxyribose in its nucleotides, while RNA contains ribose, and DNA uses the base thymine (T) while RNA uses uracil (U) in place of thymine.

• Every DNA and RNA polymer consists of multiple nucleotides.
• DNA contains deoxyribose and the bases A, G, C, and T.
• RNA is typically single stranded and contains ribose and the bases A, G, C, and U.