Multiple Choice
In the context of DNA structure, DNA is classified as which type of biological macromolecule?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In DNA and RNA, what are the monomers (repeating subunits) that polymerize to form the nucleic acid strands?
A
Amino acids
B
Nucleotides (each containing a sugar, phosphate group, and nitrogenous base)
C
Monosaccharides
D
Fatty acids
Verified step by step guidance1
Understand that DNA and RNA are types of nucleic acids, which are polymers made up of smaller repeating units called monomers.
Identify the monomers of nucleic acids as nucleotides, which are composed of three parts: a sugar molecule, a phosphate group, and a nitrogenous base.
Recognize that the sugar in DNA is deoxyribose, while in RNA it is ribose, which differentiates the two types of nucleic acids.
Note that the nitrogenous bases in nucleotides include adenine, thymine (only in DNA), uracil (only in RNA), cytosine, and guanine.
Conclude that these nucleotides polymerize through phosphodiester bonds between the phosphate group of one nucleotide and the sugar of the next, forming the backbone of the nucleic acid strand.
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