Multiple Choice
In the structure of DNA, what does the backbone of the DNA double helix primarily consist of?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, what are the monomers (basic repeating subunits) that make up a DNA molecule?
A
Monosaccharides (simple sugars)
B
Fatty acids
C
Amino acids
D
Nucleotides (deoxyribonucleotides)
Verified step by step guidance1
Understand that DNA (deoxyribonucleic acid) is a polymer, meaning it is made up of many repeating units called monomers.
Identify the type of monomers that make up DNA by recalling the structure of DNA, which consists of a sugar, a phosphate group, and a nitrogenous base.
Recognize that the monomers of DNA are called nucleotides, specifically deoxyribonucleotides, because the sugar in DNA is deoxyribose.
Differentiate nucleotides from other biological monomers such as monosaccharides (simple sugars), fatty acids, and amino acids, which are monomers for carbohydrates, lipids, and proteins respectively.
Conclude that the basic repeating subunits (monomers) of DNA are nucleotides (deoxyribonucleotides), each composed of a deoxyribose sugar, a phosphate group, and a nitrogenous base.
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