Question

Adenylic acid is

• A. Nitrogen base
• B. Nucleoside
• C. Nucleotide
• D. Amino acid

Answer 1

The correct option is C Nucleotide

The nitrogenous bases are purines and pyrimidines. The purines are adenine and guanine. The pyrimidines are thymine and cytosine. In RNA, the thymine is replaced by uracil. Adenine is attached to thymine by two hydrogen bonds while three hydrogen bond is present between guanine and cytosine. Adenine is a double ring structure with nitrogen at 1, 3, 7, 9 position. The molecular formula is C${}_5$H${}_5$N${}_5$.

Adenylic acid is formed by the combination of adenine as a nitrogenous base, ribose sugar, and triphosphate. The nitrogenous base attaches at first carbon of sugar.

So, the correct answer is option C.