Multiple Choice
In double-stranded DNA, which base-pairing rule correctly describes Watson–Crick base pairing?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the structure of DNA, which sugar is present in the backbone of each nucleotide?
A
Deoxyribose
B
Fructose
C
Ribose
D
Glucose
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 the backbone of each nucleotide in DNA is composed of alternating sugar and phosphate groups.
Identify that the sugar in DNA nucleotides is a five-carbon sugar, which can be either ribose or deoxyribose.
Recognize that in DNA, the sugar lacks one oxygen atom compared to ribose, hence the name 'deoxy' ribose.
Conclude that the sugar present in the backbone of each DNA nucleotide is deoxyribose.
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