Question:
Identify the molecules with 4 double bonds with 2 Nitrogen atoms and 4 double bonds with 5 Nitrogen atoms in the following respectively.
Identify the molecules with 4 double bonds with 2 Nitrogen atoms and 4 double bonds with 5 Nitrogen atoms in the following respectively.
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Pyrimidines (Cytosine/Thymine/Uracil) have one ring (2 N); Purines (Adenine/Guanine) have two rings (4+ N).
Updated On: Jun 10, 2026
- Thymine, Adenine
- Uracil, Guanine
- Adenine, Uracil
- Cytosine, Adenine
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Molecular structure of nitrogenous bases in DNA and RNA.
Step 2: Analysis
* Cytosine contains 2 nitrogen atoms in its ring structure. * Adenine (a purine) is a complex bicyclic structure containing 5 nitrogen atoms.
Step 3: Conclusion
Option D matches the specified nitrogen counts for Cytosine and Adenine.
Final Answer: (D)
Molecular structure of nitrogenous bases in DNA and RNA.
Step 2: Analysis
* Cytosine contains 2 nitrogen atoms in its ring structure. * Adenine (a purine) is a complex bicyclic structure containing 5 nitrogen atoms.
Step 3: Conclusion
Option D matches the specified nitrogen counts for Cytosine and Adenine.
Final Answer: (D)
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