Multiple Choice
Which set correctly lists the four nucleotides found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, what is the monomer (basic repeating subunit) of DNA?
A
An amino acid
B
A fatty acid
C
A monosaccharide (e.g., glucose)
D
A nucleotide (specifically a deoxyribonucleotide)
Verified step by step guidance1
Understand that DNA is a polymer, meaning it is made up of many repeating units called monomers.
Recall that the monomers of DNA are called nucleotides, which are specifically deoxyribonucleotides in DNA.
Recognize that each nucleotide consists of three components: a phosphate group, a deoxyribose sugar (a type of monosaccharide), and a nitrogenous base.
Differentiate nucleotides from other biological molecules such as amino acids (monomers of proteins), fatty acids (components of lipids), and simple sugars like glucose (monomers of carbohydrates).
Conclude that the basic repeating subunit (monomer) of DNA is a nucleotide, not an amino acid, fatty acid, or monosaccharide alone.
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