Question

Which of the following statements concerning nucleic acids is FALSE?

A) Cytosine is found in all nucleic acid molecules.
B) Nucleic acid strands are held together by hydrogen bonds between complementary bases.
C) The nucleic acid polymer is composed of peptide bonds.
D) Not all DNA is double stranded.
E) Some viruses have DNA as their genomes.

Answer 1

Option C is false because nucleic acids are composed of nucleotides connected by phosphodiester bonds, not peptide bonds, which link amino acids in proteins. The structures of DNA and RNA include a sugar-phosphate backbone and nitrogenous bases, with hydrogen bonds between complementary bases in DNA.

Step-by-step explanation:

The correct answer to the question which of the following statements concerning nucleic acids is FALSE, The nucleic acid polymer is composed of peptide bonds. This statement is false because nucleic acids, such as DNA and RNA, are actually polymers composed of nucleotides linked by phosphodiester bonds, not peptide bonds. Peptide bonds are found between amino acids in proteins, not in nucleic acids. DNA and RNA are made up of a sugar-phosphate backbone to which nitrogenous bases are attached, and in the case of DNA, strands are held together by hydrogen bonds between complementary bases such as adenine to thymine and cytosine to guanine.