Which pair of amino acids absorbs the most UV light at 280 nm?

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Question:
Which pair of amino acids absorbs the most UV light at 280 nm?

1.Threonine & Histidine

2.Trp & Tyrosine

3.Cystein & Asparagine

4.Phenylalnine & Proline

Posted Date:-2021-02-25 09:23:32

More MCQS Questions and answers

  1. Protein fluorescence arises primarily from which residue?
  2. Which of the following is an essential amino acid?
  3. The sulphur containing side chain of cysteine is
  4. Amino acids required in the human diet and not synthesized by the body are called
  5. An essential amino acid is one that
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  8. How many different amino acids are there?
  9. In a polypeptide average mass of an amino acid residue is
  10. Molecules that bear charged groups of opposite polarity are known as
  11. Proteins and macromolecular structures take on their higher order structures
  12. Serine and threonine are polar amino acids due to
  13. Stereo chemical configuration of all a-amino acids derived from proteins is
  14. The isoelectric point of an amino acid is defined as the pH
  15. The α-amino acids have a carboxyl group with a pK around __________ , and an amino group with a pK near __________ .
  16. The sequence of letters 'WYQN' will represent
  17. What is the end product of leucine metabolism?
  18. What is the heaviest of the twenty amino acids?
  19. What is the product of the catabolic breakdown of Alanine?
  20. What is the product of the catabolic breakdown of Arginine?
  21. When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes
  22. Which amino acid when exposed to ninhydrin produces a brown color?
  23. Which amino acids would most likely reside in the membrane-anchoring domain of a membrane embedded protein?
  24. Which of the following amino acid contain an imidazolium moiety?
  25. Which of the following amino acid is known as half-cystine residue?
  26. Which of the following amino acids can form hydrogen bonds with their side (R) groups?
  27. Which of the following is a nonprotein amino acid?
  28. Which of the following is a nonstandard amino acid?
  29. Which of the following is not a sensible grouping of amino acids based on their polarity properties?
  30. Which of the following is not an essential amino acid?
  31. Which of the following is not the hydrophobic and aromatic amino acid?
  32. Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?
  33. Which pair of amino acids absorbs the most UV light at 280 nm?
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