Multiple Choice
Which of the following best describes a DNA molecule?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In DNA structure, DNA is composed of repeating structural units called what?
A
Amino acids
B
Nucleotides
C
Monosaccharides
D
Fatty acids
Verified step by step guidance1
Understand that DNA is a polymer, meaning it is made up of many repeating units linked together.
Recall that the basic building blocks of DNA are not amino acids (which build proteins), monosaccharides (which are simple sugars), or fatty acids (which are components of lipids).
Identify that the repeating structural units of DNA are called nucleotides.
Recognize that each nucleotide consists of three parts: a phosphate group, a sugar molecule (deoxyribose), and a nitrogenous base.
Conclude that the correct term for the repeating units making up DNA is nucleotides.
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