Home
Class 12
CHEMISTRY
The structure of a basic amino acid, lys...

The structure of a basic amino acid, lysine, is given below:
`(HOOC-underset(.^(o+)NH_(3))underset(|)(C)H-(CH_(2))_(3)-CH_(2)overset(o+)(N)H_(3))(A)`
The `pK_(a_1),pK_(a_2),` and `PK_(a_3)` of `(A)`, respectively, are: `2.18,8.95`, and `10.53`.
What is the `pH` at isoelectric points `(pI)`?

A

`(pK_(a_(1))+pK_(a_(2)))/(2)`

B

`(pK_(a_(1))+pK_(a_(3)))/(2)`

C

`(pK_(a_(2))+pK_(a_(3)))/(2)`

D

`(pK_(a_(1))+pK_(a_(2))+pK_(a_(3)))/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    CENGAGE CHEMISTRY|Exercise Exercises (Single Correcttype)|81 Videos

  • BIOMOLECULES

    CENGAGE CHEMISTRY|Exercise Exercises (Assertion-Reasoning)|15 Videos

  • BIOMOLECULES

    CENGAGE CHEMISTRY|Exercise Exercises (Linked Comprehension)|38 Videos

  • AROMATIC COMPOUNDS AND ALKYL AND ARYL HALIDES

    CENGAGE CHEMISTRY|Exercise Archives Subjective|18 Videos

  • BIOMOLECULES, POLYMERS AND CHEMISTRY IN EVERYDAY LIFE

    CENGAGE CHEMISTRY|Exercise QUESTION BANK|8 Videos

Similar Questions

Explore conceptually related problems

The structure given below represents CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-NH_(2)

H_(3)C-CH_(2)-underset(O)underset(||)(C)-CH_(3)underset(D_(2)O)overset(NaBH_(4))to Product ?

pK_(a1) , pK_(a_(2)) and pK_(a_(3)) of H_(3)PO_(4) are respectively x,y and z. pH of 0.1 M Na_(2)HPO_(4) solution is

The structure given below represents CH_(3)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-NH_(2)

Find iso-electric point of given amino acid CH_(3)-underset(o+)underset(NH_(3))underset(|)(CH)-CO_(2)H " " pK_(a) = 2.2

How many acidic group is present in given amino acid ? overset(o+)(N)H_(3)-underset(CO_(2)^(-))underset(|)(CH)-CH_(2)-CO_(2)H

CH_(3)-CH_(2)-underset(O)underset(||)C-NH_(2)overset(A)rarrCH_(3)-CH_(2)-NH_(2)overset(B)rarrCH_(3)-CH_(2)-OH In the above sequence A & B respectively are-

CENGAGE CHEMISTRY-BIOMOLECULES-Exercises (Multiple Correcttype)
  1. Which of the following are D-sugars?

    Text Solution

    |

  2. Which of the following pairs are C-2 epimers?

    Text Solution

    |

  3. Which of the following pairs form same osazone?

    Text Solution

    |

  4. Which of the following pairs are C-2 epimers as well as enantiomers?

    Text Solution

    |

  5. Which statements(s) is//are correct about sucrose?

    Text Solution

    |

  6. Which statements are correct about sucrose?

    Text Solution

    |

  7. Which statements are correct about sucrose?

    Text Solution

    |

  8. Which statements are correct about lactose?

    Text Solution

    |

  9. Which statements are correct about lactose?

    Text Solution

    |

  10. Which statements are correct about the reaction of lactose?

    Text Solution

    |

  11. Which statements are correct about the reaction of maltose?

    Text Solution

    |

  12. How many base pairs in the gene are needed to code for the enzyme lyso...

    Text Solution

    |

  13. Which of the following contain disulphide linkages?

    Text Solution

    |

  14. Globular proteins are present in:

    Text Solution

    |

  15. Which of the statements are correct about D,L of sugars and amino acid...

    Text Solution

    |

  16. A mixture of three protiens, (A) (pepsin), (B) (haemo-globin), and (C ...

    Text Solution

    |

  17. Which statements are correct about the mixture of lysine pI=9.6) and g...

    Text Solution

    |

  18. The structure of aspartic acid is given below . (HOOC-underset(.^(...

    Text Solution

    |

  19. The structure of a basic amino acid, lysine, is given below: (HOOC-u...

    Text Solution

    |

  20. Which statementsare correct?

    Text Solution

    |