Home
Class 11
BIOLOGY
Purines have nitrogen atoms at position...

Purines have nitrogen atoms at _____ positions.

A

1', 3', 7', 9'

B

1', 5', 7', 9'

C

1', 3'

D

1', 9'

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BIOLOGICAL CLASSIFICATION

    NCERT FINGERTIPS|Exercise Biological Classification|132 Videos

  • BODY FLUIDS AND CIRCULATION

    NCERT FINGERTIPS|Exercise Body Fluids And Circulation|151 Videos

Similar Questions

Explore conceptually related problems

Pyrimidines have nitrogen atoms at _____ positions.

Purine possess nitrogen at

Purine base is

In which pair of substances do the nitrogen atoms have the same oxidation state ?

Which nitrogen atom is most basic ?

In DNA purine nitrogen bases are :-

In purines, N is at position _____in its two rinigs.

A ____ bond exists between the two nitrogen atoms in a molecule of nitrogen.

NCERT FINGERTIPS-BIOMOLECULES-Biomolecules
  1. Read the given statements. (i) Fructose is the sweetest sugar. (ii...

    Text Solution

    |

  2. In a DNA molecule, the phosphate group is attached to cabon of the su...

    Text Solution

    |

  3. Purines have nitrogen atoms at positions.

    Text Solution

    |

  4. Pyrimidines have nitrogen atoms at positions.

    Text Solution

    |

  5. B-DNA which is right -handed double helix contains base pairs per tur...

    Text Solution

    |

  6. Which of the following is an incorrect match ?

    Text Solution

    |

  7. Which of the two groups of the given formula is involved in peptide bo...

    Text Solution

    |

  8. Primary structure of proteins is due to the presence of

    Text Solution

    |

  9. Identify X and Y in the given sequence.

    Text Solution

    |

  10. At some points a protein molecule may be folded back on itself. This c...

    Text Solution

    |

  11. An alpha- helix is the example of which type of protein structure ?

    Text Solution

    |

  12. A beta-pleated sheet organisation in a polypeptide chain is an example...

    Text Solution

    |

  13. Refer to the given figure. Formation of structures A and B could be ...

    Text Solution

    |

  14. Recognise the figure and find out the correct matching.

    Text Solution

    |

  15. Adult human haemolgobin consists of

    Text Solution

    |

  16. Read the given statements and select the correct option. Statement 1...

    Text Solution

    |

  17. Keratin present in hair shows secondary structure known as

    Text Solution

    |

  18. Select the option that correctly identifies the chemical bonds present...

    Text Solution

    |

  19. What does A represent in the given diagram of a nucleotide ?

    Text Solution

    |

  20. Which bonds are indicated by X and Y in the given diagram ?

    Text Solution

    |