Multiple Choice
Which type of compounds typically contain carbon atoms as a fundamental part of their structure?
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3. Chemical Reactions
Functional Groups in Chemistry
Multiple Choice
Which nitrogenous base is found in DNA but not in RNA?
A
Cytosine
B
Adenine
C
Uracil
D
Thymine
Verified step by step guidance1
Recall the four main nitrogenous bases found in DNA: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Recall the four main nitrogenous bases found in RNA: Adenine (A), Uracil (U), Cytosine (C), and Guanine (G).
Compare the bases in DNA and RNA to identify which base is unique to DNA and not present in RNA.
Note that Uracil (U) replaces Thymine (T) in RNA, so Uracil is found in RNA but not in DNA.
Conclude that Thymine (T) is the nitrogenous base found in DNA but not in RNA.
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