Multiple Choice
Which of the following lists correctly identifies the nitrogenous bases found in RNA?
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7. DNA and Chromosome Structure
RNA
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Which nucleotide is found in RNA but not in DNA?
A
Uracil
B
Adenine
C
Cytosine
D
Thymine
Verified step by step guidance1
Recall the basic structure of nucleic acids: DNA and RNA are both made up of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.
Identify the four nitrogenous bases found in DNA: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Identify the four nitrogenous bases found in RNA: Adenine (A), Uracil (U), Cytosine (C), and Guanine (G).
Compare the bases in DNA and RNA to find which base is unique to RNA and not present in DNA.
Conclude that Uracil is the nucleotide found in RNA but not in DNA, replacing Thymine which is found in DNA.
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