Multiple Choice
In DNA structure, DNA is composed of repeating structural units called what?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the structure of DNA, which sugar is found in the nucleotide backbone?
A
Deoxyribose
B
Ribose
C
Glucose
D
Fructose
Verified step by step guidance1
Recall that DNA stands for Deoxyribonucleic Acid, which hints at the type of sugar present in its structure.
Understand that nucleotides, the building blocks of DNA, consist of three components: a phosphate group, a nitrogenous base, and a sugar molecule.
Identify that the sugar in DNA nucleotides is a five-carbon sugar, which can be either ribose or deoxyribose.
Recognize that the key difference between DNA and RNA sugars is that DNA contains deoxyribose, which lacks one oxygen atom compared to ribose found in RNA.
Conclude that the sugar found in the nucleotide backbone of DNA is deoxyribose.
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