Multiple Choice
In the context of DNA structure, which nucleotide base is not found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, DNA is made of repeating units of building blocks called what?
A
Amino acids
B
Monosaccharides
C
Nucleotides
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 building blocks of DNA are not amino acids (which make up proteins) or monosaccharides (which are simple sugars), nor are they fatty acids (which are components of lipids).
Identify that the correct repeating units in DNA are called nucleotides, which consist of three parts: a phosphate group, a sugar (deoxyribose), and a nitrogenous base.
Recognize that nucleotides link together through phosphodiester bonds between the sugar of one nucleotide and the phosphate of the next, forming the backbone of the DNA strand.
Conclude that DNA's structure is built from these nucleotide units repeating in a chain, which encodes genetic information.
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