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Which of the following statements most c...

Which of the following statements most correctly defines the isoelectric point ?

A

The pH at which all molecular species are ionized and that carry the same charge

B

The pH at which all molecular species are neutral and uncharged

C

The pH at which half molecular species are ionised (charged) and other half unionised

D

The pH at which negataively and positively charged molecular species in equal concentration

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The correct Answer is:
D
The pH at which amino acid does not move towards anode (or) cathode.
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AAKASH SERIES-PROTEINS AND NUCLEIC ACIDS -PRACTICE SHEET - 1
  1. You have a mixture of three amino acids : E(pI = 3.2), Y(pI = 5.7) & K...

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  2. Which of the following statements is true for phenylalanine in an aque...

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  3. Which of the following statements most correctly defines the isoelectr...

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  4. At isoelectric point, amino acid is present as

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  5. Which of the following statement is not true ?

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  6. Which of the following is the major solute species in a solution of al...

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  7. An activated amino acid A(H(2)NCHRCOX) reacts with an amino acid B(H(2...

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  8. Which statement about proteins is correct ?

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  9. Peptides are compounds of amino acids joined by amide bonds. Which of ...

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  10. Which of the following is an important secondary structural feature in...

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  11. A protein can be denaturated by ……….

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  12. Which of the following combination are correct in case of proteins ?

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  13. alpha - amino acids are high melting crystalline solids because of the...

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  14. alpha - amino acids are high melting crystalline solids because of the...

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  15. alpha - amino acids are high melting crystalline solids because of the...

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  16. The product (A) is

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  17. Compound (B) is

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  18. The product (C ) is

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  19. {:("List - I","List - II"),("(A) Glycine","(p) Forms chloroacetic acid...

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  20. {:("List - I","List - II"),("(A) Acidic amino acid","(p) Valine"),("(B...

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