Scelta multipla
In DNA structure, how do the nitrogenous bases bond together to hold the two strands of the double helix in place?
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7. DNA and Chromosome Structure
DNA Structure
Scelta multipla
Both DNA and RNA are made of repeating subunits called which of the following?
A
Amino acids
B
Monosaccharides
C
Fatty acids
D
Nucleotides
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Understand that both DNA and RNA are nucleic acids, which are polymers made up of smaller repeating units.
Recall that the basic building blocks of nucleic acids are called nucleotides, not amino acids, monosaccharides, or fatty acids.
Recognize that nucleotides consist of three components: a sugar (deoxyribose in DNA, ribose in RNA), a phosphate group, and a nitrogenous base.
Differentiate nucleotides from amino acids (which build proteins), monosaccharides (simple sugars), and fatty acids (components of lipids).
Conclude that the repeating subunits of both DNA and RNA are nucleotides.
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