MCQ
Which substance is not present in nucleic acid
- ACytosine
- BAdenine
- CThymine
- ✓Guanidine
✓
Answer
Correct option: D.
Guanidine
d
Guanidin is not present in nucleic acid and as cytosine, Adenine, Thymine and Guanine are the four main bases found in nucleic acid. Adenine and Guanine are purines while thymine and cytosine are pyrimidines. They together form triple bonded histones of $DNA$. Guanidine is another compound which has a chemical formula $HNC$.
Guanidin is not present in nucleic acid and as cytosine, Adenine, Thymine and Guanine are the four main bases found in nucleic acid. Adenine and Guanine are purines while thymine and cytosine are pyrimidines. They together form triple bonded histones of $DNA$. Guanidine is another compound which has a chemical formula $HNC$.
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