객관식
Which of the following statements describe purines but not pyrimidines?
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34. Nucleic Acids
Nitrogenous Bases
Multiple Choice
Which of the following molecules is a purine nitrogenous base?
A
Adenine
B
Uracil
C
Cytosine
D
Thymine
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검증된 단계별 안내1
Understand the structure of purine and pyrimidine bases: Purines have a two-ring structure, while pyrimidines have a single-ring structure.
Identify the common purine bases: Adenine and Guanine are the two purine bases found in nucleic acids.
Review the structures of the given options: Adenine, Uracil, Cytosine, and Thymine.
Recognize that Uracil, Cytosine, and Thymine are pyrimidines, each having a single-ring structure.
Conclude that Adenine, with its two-ring structure, is the purine nitrogenous base among the options provided.
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