The purine that binds with two hydrogen atoms and is found in both nucleic acids is ___________.
A
Adenine
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B
Uracil
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C
Thymine
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D
Cytosine
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E
None of these
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Solution
The correct option is A Adenine
The purine bases of one nucleotide chain form hydrogen bonds with the pyrimidine bases present directly opposite them on the other chain. The hydrogen bonds are formed in the polar aqueous environment. The adenine base pairs with thymine with two hydrogen bonds and guanine base pairs with cytosine with three hydrogen bonds.