Multiple Choice
In DNA structure, which pair of nitrogenous bases are classified as purines?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
What type of sugar is found in DNA?
A
Ribose
B
Fructose
C
Glucose
D
2-deoxyribose
Verified step by step guidance1
Understand that DNA (deoxyribonucleic acid) is composed of nucleotides, each containing a sugar, a phosphate group, and a nitrogenous base.
Recall that the sugar in DNA is a five-carbon sugar, also known as a pentose sugar.
Differentiate between the sugars found in nucleic acids: RNA contains ribose, while DNA contains a modified sugar called 2-deoxyribose.
Recognize that 2-deoxyribose differs from ribose by lacking an oxygen atom on the 2' carbon, which is why it is called 'deoxy'.
Conclude that the sugar found in DNA is 2-deoxyribose, not ribose, fructose, or glucose.
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