Multiple Choice
Which of the following is a nitrogenous base found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure and related nucleic acids, what are the subunits (monomers) of DNA and RNA?
A
Amino acids
B
Monosaccharides
C
Fatty acids
D
Nucleotides
Verified step by step guidance1
Understand that DNA and RNA are nucleic acids, which are polymers made up of repeating subunits called monomers.
Recall that the monomers of nucleic acids are nucleotides, which consist of three components: a phosphate group, a five-carbon sugar, and a nitrogenous base.
Recognize that in DNA, the sugar is deoxyribose, while in RNA, the sugar is ribose, which differentiates the two types of nucleic acids.
Note that amino acids are the monomers of proteins, monosaccharides are the monomers of carbohydrates, and fatty acids are components of lipids, so these are not the correct subunits for DNA or RNA.
Conclude that the correct subunits (monomers) of both DNA and RNA are nucleotides.
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