객관식
Which set of nitrogenous bases is found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
Which set correctly lists the four nitrogenous bases found in DNA?
A
Adenine, thymine, cytosine, and uracil
B
Adenine, thymine, cytosine, and guanine
C
Adenine, uracil, cytosine, and guanine
D
Thymine, uracil, cytosine, and guanine
검증된 단계별 안내1
Recall that DNA is composed of four nitrogenous bases which are divided into two categories: purines and pyrimidines.
Identify the purines in DNA: adenine (A) and guanine (G).
Identify the pyrimidines in DNA: cytosine (C) and thymine (T).
Note that uracil (U) is not found in DNA; it is found in RNA instead, replacing thymine.
Therefore, the correct set of nitrogenous bases in DNA is adenine, thymine, cytosine, and guanine.
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