Multiple Choice
In an RNA strand base-pairing with a DNA template, which RNA nucleotide is complementary to thymine (T) on the DNA strand?
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7. DNA and Chromosome Structure
RNA
Multiple Choice
In RNA, what is the name of the pentose sugar found in the nucleotide backbone?
A
Glucose
B
Ribose
C
Deoxyribose
D
Fructose
Verified step by step guidance1
Understand that nucleotides, the building blocks of RNA and DNA, consist of three components: a nitrogenous base, a phosphate group, and a pentose sugar.
Recall that the pentose sugar in DNA is called deoxyribose, which lacks one oxygen atom compared to the sugar in RNA.
Recognize that the pentose sugar in RNA is ribose, which has a hydroxyl group (-OH) attached to the 2' carbon, distinguishing it from deoxyribose.
Eliminate other options such as glucose and fructose, which are hexose sugars (six-carbon sugars) and not part of the nucleotide backbone.
Conclude that the correct pentose sugar in the RNA nucleotide backbone is ribose.
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