QQuestionBiology
QuestionBiology
Which base is found in RNA but not in DNA?
A. adenine
B. guanine
C. uracil
D. cytosine
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Answer
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Step 1:I'll solve this step by step:
Step 2:: Understand the Bases in Nucleic Acids
The four bases found in nucleic acids are: - Adenine (A) - Guanine (G) - Cytosine (C) - Thymine (T) in DNA - Uracil (U) in RNA
Step 3:: Compare DNA and RNA Base Composition
- DNA contains: $$A$$, $$G$$, $$C$$, and $$T
- RNA contains: A, G, C, and U
Step 4:: Identify the Unique Base
The key difference is that RNA uses uracil ($$U$$) instead of thymine ($$T$$) found in DNA.
Step 5:: Select the Correct Answer
By comparing the options: A. Adenine - found in both DNA and RNA B. Guanine - found in both DNA and RNA C. Uracil - found ONLY in RNA ✓ D. Cytosine - found in both DNA and RNA
Final Answer
C. uracil is the base found in RNA but not in DNA.
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