Which set correctly lists the four nitrogenous bases found in RNA?

• A. Adenine, thymine, cytosine, guanine
• B. Adenine, uracil, cytosine, thymine
• C. Adenine, uracil, cytosine, guanine
• D. Adenine, uracil, guanine, thymine

Answer: (C)

Verified step by step guidance

1. Recall that RNA (ribonucleic acid) is composed of four nitrogenous bases, which are the building blocks of its nucleotide structure.
2. Identify the purine bases in RNA: Adenine (A) and Guanine (G). These are larger, double-ring structures.
3. Identify the pyrimidine bases in RNA: Cytosine (C) and Uracil (U). Note that Uracil replaces Thymine, which is found in DNA instead.
4. Understand that Thymine (T) is present in DNA but not in RNA; in RNA, Uracil takes its place and pairs with Adenine during base pairing.
5. Therefore, the correct set of nitrogenous bases in RNA is Adenine, Uracil, Cytosine, and Guanine.