Multiple Choice
In the acronym DNA, what does the letter D stand for?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, what is the smallest repeating subunit (monomer) of DNA?
A
Nucleotide
B
Nucleosome
C
Amino acid
D
Codon
Verified step by step guidance1
Understand that DNA is a polymer made up of smaller units linked together. These smaller units are called monomers.
Recall that the structure of DNA consists of a sugar-phosphate backbone with nitrogenous bases attached.
Identify that the smallest repeating subunit of DNA includes a sugar molecule, a phosphate group, and a nitrogenous base.
Recognize that this subunit is called a nucleotide, which serves as the building block of DNA.
Differentiate nucleotides from other options: nucleosomes are DNA-protein complexes, amino acids are protein monomers, and codons are sequences of three nucleotides coding for amino acids.
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