Five nitrogen atoms are present in the ring o | vedclass

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(B) The nitrogenous bases are classified into two types: purines and pyrimidines.Purines (Adenine and Guanine) consist of a double-ring structure cont

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Guanine

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(B) The nitrogenous bases are classified into two types: purines and pyrimidines.Purines (Adenine and Guanine) consist of a double-ring structure containing four nitrogen atoms in the rings.However,Guanine specifically has an additional nitrogen atom in its amino group or side chain,but the question asks for the ring structure. Actually,looking at the molecular structure of Guanine $(C_5H_5N_5O)$,it contains five nitrogen atoms in total,with four nitrogen atoms forming part of the fused heterocyclic ring system (a pyrimidine ring fused to an imidazole ring).Uracil,Cytosine,and Thymine are pyrimidines,which contain only two nitrogen atoms in their single-ring structure.Therefore,Guanine is the correct answer as it contains five nitrogen atoms.

Column $I$	Column $II$
$(A)$ Thymine	$(i)$ Nucleic acid
$(B)$ Deoxythymidine	$(ii)$ Nucleoside
$(C)$ Guanylic acid	$(iii)$ Nucleotide
$(D)$ Poly guanylic acid	$(iv)$ Nitrogenous base

Five nitrogen atoms are present in the ring of

Similar Questions

$P$: Nitrogen is essential for the synthesis of nucleic acids.
$Q$: Phosphorus is important in the structure of nucleic acids.

Which of the following is an example of a purine nitrogenous base?

Which of the following is a purine?

Match the column $I$ with column $II$:
Column $I$ Column $II$
$(A)$ Thymine $(i)$ Nucleic acid
$(B)$ Deoxythymidine $(ii)$ Nucleoside
$(C)$ Guanylic acid $(iii)$ Nucleotide
$(D)$ Poly guanylic acid $(iv)$ Nitrogenous base

The element absent in $RNA$ is

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