Multiple Choice
In DNA structure, which pair of nitrogenous bases are classified as purines?
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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