Question

Purine derivative among the following bases is?

• A. Guanine
• B. Cytosine
• C. Uracil
• D. Thymine

Answer 1

The correct option is A

Guanine

The correct option is A.

Explanation of the correct option:

1. A purine is an organic heterocyclic aromatic compound containing a fused ring of pyrimidine.
2. The purines in DNA are guanine and adenine, as are in RNA.
3. So, Guanine is a purine.

Explanation of the incorrect option:

Option B:

1. A chemical compound used to make one of the building blocks of DNA and RNA is called cytosine.
2. Cytosine is found in both DNA and RNA.

Option C:

1. Uracil is a chemical compound used to make one of the building blocks of RNA.
2. Uracil is a pyrimidine in RNA.

Option D:

1. Thymine is one of the four nucleotide bases in DNA, which forms the basic building blocks of deoxyribonucleic acid (DNA).
2. Thymine is a pyrimidine in DNA.

Final answer: The purine derivative among the following bases is Guanine.