Multiple Choice
In DNA structure, the “twisted ladder” shape of DNA is called the:
37
views
7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA and RNA structure, what is the monomer (basic repeating subunit) of both DNA and RNA?
A
Monosaccharide
B
Nucleotide
C
Amino acid
D
Fatty acid
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, which consist of three components: a sugar (deoxyribose in DNA and ribose in RNA), a phosphate group, and a nitrogenous base.
Recognize that monosaccharides are simple sugars and are part of the nucleotide structure but are not the complete monomer themselves.
Note that amino acids are the monomers of proteins, not nucleic acids, and fatty acids are components of lipids, so they are not related to DNA or RNA monomers.
Conclude that the correct monomer for both DNA and RNA is the nucleotide, as it is the basic repeating subunit that forms these nucleic acids.
Related Videos
Related Practice
