Which of the following is a purine type of ni | vedclass

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(B) Nitrogenous bases are classified into two types: Purines and Pyrimidines.Purines are double-ring structures (a six-membered ring fused to a five-m

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Guanine

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(B) Nitrogenous bases are classified into two types: Purines and Pyrimidines.Purines are double-ring structures (a six-membered ring fused to a five-membered ring),which include Adenine and Guanine.Pyrimidines are single-ring structures (a six-membered ring),which include Cytosine,Thymine,and Uracil.Option $A$ shows Cytosine (pyrimidine).Option $B$ and $D$ show Guanine (purine).Option $C$ shows Thymine (pyrimidine).Therefore,Guanine is the purine type of nitrogenous base.

List $-I$	List $-II$
$a$. Adenine	$i$. Pigment
$b$. Anthocyanin	$ii$. Polysaccharide
$c$. Chitin	$iii$. Alkaloid
$d$. Codeine	$iv$. Purine

Which of the following is a purine type of nitrogenous base?

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List $-I$ List $-II$

$a$. Adenine $i$. Pigment

$b$. Anthocyanin $ii$. Polysaccharide

$c$. Chitin $iii$. Alkaloid

$d$. Codeine $iv$. Purine

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