A) Adenosine, cytidilicacid, cytosine
B) Adenylic acid, cytidilic acid, guanylic acid
C) Cytidine, adenine, adenylic acid
D) Uracil, thymidine, thymidylic acid
Correct Answer: B
Solution :
[b] Adenylic acid, cytidilic acid and guanylic acid are nucleotides. A nucleotide is composed of three components - nitrogen base (adenosine, cytosine, guanine), ribose sugar and a phosphate group. These are monomer unit of nucleic acid, i.e. RNA and DNA. Adenine, cytidine, thymidine are nucleosides. Uracil, cytosine and adenosine are nitrogenous bases.
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