BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA
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RNA
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Both
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None of the above
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Detailed explanation-1: -Adenine and guanine are found in RNA and DNA in terrestrial life, whereas thymine is only found in DNA and uracil only in RNA.
Detailed explanation-2: -Final answer: Purines found both in DNA and RNA are adenine and guanine.
Detailed explanation-3: -Guanine consists of two rings attached to each other: a five membered ring and a six membered ring. The five membered ring has two nitrogen atoms and three carbon atoms. One nitrogen atom is bonded to the two carbon atoms, which are also part of the five membered ring, and a hydrogen.
Detailed explanation-4: -So, adenine always pairs with thymine with two hydrogen bonds and guanine always pairs with cytosine with three hydrogen bonds. Hence, Guanine is an example of a nitrogenous base.