Multiple Choice
In the DNA double helix, what primarily holds the two antiparallel strands together?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, what are the monomers (repeating subunits) that make up a DNA polymer called?
A
Monosaccharides
B
Fatty acids
C
Nucleotides (deoxyribonucleotides)
D
Amino acids
Verified step by step guidance1
Understand that DNA is a polymer, which means it is made up of many repeating subunits called monomers.
Recall that the structure of DNA consists of a sugar-phosphate backbone and nitrogenous bases attached to the sugar.
Identify the monomers of DNA as nucleotides, which are composed of three parts: a deoxyribose sugar, a phosphate group, and a nitrogenous base.
Recognize that these nucleotides are specifically called deoxyribonucleotides because the sugar in DNA is deoxyribose.
Conclude that the correct term for the monomers making up DNA is nucleotides (deoxyribonucleotides), distinguishing them from monosaccharides, fatty acids, and amino acids.
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