Home
Class 12
CHEMISTRY
Which of the following are purine bases?...

Which of the following are purine bases?

A

Guanine

B

Adenine

C

Thymine

D

Uracil

Text Solution

Verified by Experts

The correct Answer is:
A, B

Purines consist of siz membered and five membered nitrogen containing ring fused together. Guanine and adenine are purine bases whose structures are

While thymine and uracil are pyrimidene bases Hence (a) and (b) are correct choices.
Promotional Banner

Topper's Solved these Questions

  • AMINES

    NCERT EXEMPLAR|Exercise Amines|77 Videos
  • CHEMICAL KINETICS

    NCERT EXEMPLAR|Exercise Chemical Kinetics|66 Videos

Similar Questions

Explore conceptually related problems

Which of the following are purines?

Which of the following is a purine ?

Which of the following are the purine nucleotides ?

Purine base is

Which of the following heterocyclic base of purine class ?

NCERT EXEMPLAR-BIOMOLECULES -Biomolecules
  1. Which of the following monosaccharides are present as five membered cy...

    Text Solution

    |

  2. In fibrous proteins, polypeptide chains are held together by........ .

    Text Solution

    |

  3. Which of the following are purine bases?

    Text Solution

    |

  4. Which of the following terms are correct about enzyme?

    Text Solution

    |

  5. Name the sugar present in milk. How many monosaccharide units are pres...

    Text Solution

    |

  6. How do you explain the presence of all the six carbon atoms in glucose...

    Text Solution

    |

  7. In nucleoside, a base is attached at 1' position of sugar moiety. Nucl...

    Text Solution

    |

  8. Name the linkage connecting monosaccharide units in polysaccharides.

    Text Solution

    |

  9. Under what conditions glucose is converted to gluconic acid and saccha...

    Text Solution

    |

  10. Monosaccharides contain carbonyl group hence are classified, as aldose...

    Text Solution

    |

  11. The letters 'D' or 'L' before the name of a stereoisomer of a compound...

    Text Solution

    |

  12. Aldopentoses named as ribose and 2-deoxyribose are found in nucleic ac...

    Text Solution

    |

  13. Which sugar is called invert sugar? Why is it called so?

    Text Solution

    |

  14. Amino acids can be classified as alpha-,beta-,gamma-,delta-and so depe...

    Text Solution

    |

  15. alpha-helix is a secondary structure of proteins formed by twisting of...

    Text Solution

    |

  16. Some enzymes are named after the reaction, where they are used. What n...

    Text Solution

    |

  17. During curdling of milk, what happens to sugar present in it?

    Text Solution

    |

  18. How do yout explain the presence of five -OH groups in glucose molecul...

    Text Solution

    |

  19. Why does compound (A) given below not forman oxime?

    Text Solution

    |

  20. Why must vitamin C be supplied regularly in diet?

    Text Solution

    |