BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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adenine
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cytosine
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guanine
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thymine
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uracil
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Detailed explanation-1: -Pyrimidines consist of single ringed structure and examples are cytosine, uracil and thymine.
Detailed explanation-2: -Adenine (A) and guanine (G) are purines, and cytosine (C), thymine (T), and uracil (U) are pyrimidines.
Detailed explanation-3: -One of two chemical compounds that cells use to make the building blocks of DNA and RNA. Examples of pyrimidines are cytosine, thymine, and uracil.
Detailed explanation-4: -Because of their structural similarity, we usually refer the nine-member double rings adenine and guanine as purines, and six-member single-ring thymine, uracil, and cytosine are pyrimidines.
Detailed explanation-5: -In DNA, the uracil nucleobase is replaced by thymine (T). Uracil is a demethylated form of thymine.