Purine Vs Pyrimidine
Easychemistry
Purine bases in DNA are:
Select the correct option:
Solution
Incorrect! Answer:
Adenine and guanine
- Structural Types: Nitrogenous bases are classified based on their heterocyclic ring systems.
- Purines: Have a double-ring structure (a six-membered ring fused to a five-membered ring). These are Adenine (A) and Guanine (G).
- Pyrimidines: Have a single six-membered ring. These are Cytosine (C), Thymine (T), and Uracil (U).
- DNA Bases: A, G, C, T. (Uracil is in RNA).
- Base Pairing: A purine always pairs with a pyrimidine (A-T and G-C).
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About This Question
- Subject
- chemistry
- Chapter
- biomolecules
- Topic
- purine vs pyrimidine
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Adenine and guanine
- Structural Types: Nitrogenous bases are classified based on their heterocyclic ring systems.
- Purines: Have a double-ring structure (a six-membered ring fused to a five-membered ring). These are Adenine (A) and Guanine (G).
- Pyrimidines: Have a single six-membered ring. These are Cytosine (C), Thymine (T), and Uracil (U).
- DNA Bases: A, G, C, T. (Uracil is in RNA).
- Base Pairing: A purine always pairs with a pyrimidine (A-T and G-C).
This easy difficulty chemistry question is from the chapter biomolecules, covering the topic of purine vs pyrimidine. It appeared in the 2025 exam.
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