Multiple Choice
Which set correctly lists the four nitrogenous bases found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, the monomers (building blocks) of DNA and RNA are:
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 units called monomers.
Recall that the monomers of nucleic acids are nucleotides, not amino acids, monosaccharides, or fatty acids.
Recognize that each nucleotide consists of three components: a phosphate group, a five-carbon sugar (deoxyribose in DNA and ribose in RNA), and a nitrogenous base.
Differentiate nucleotides from amino acids (which are monomers of proteins), monosaccharides (which are monomers of carbohydrates), and fatty acids (which are components of lipids).
Conclude that the correct monomers for DNA and RNA are nucleotides, as they form the backbone and carry the genetic information.
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