Multiple Choice
Which nitrogenous bases are found in a strand of DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, DNA is a polymer of which type of monomer?
A
Monosaccharides (simple sugars)
B
Nucleotides (deoxyribonucleotides)
C
Fatty acids
D
Amino acids
Verified step by step guidance1
Understand that DNA is a polymer, meaning it is made up of repeating units called monomers.
Recall the structure of DNA, which consists of a sugar-phosphate backbone and nitrogenous bases attached to the sugar.
Identify the monomer units of DNA as nucleotides, which are composed of three parts: a deoxyribose sugar, a phosphate group, and a nitrogenous base.
Recognize that monosaccharides (simple sugars) are components of nucleotides but are not the monomers themselves; fatty acids and amino acids are monomers of other biological molecules (lipids and proteins, respectively).
Conclude that the correct monomers of DNA are nucleotides (specifically deoxyribonucleotides), which polymerize to form the DNA strand.
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