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MCQs

Total Questions : 33 | Page 4 of 4 pages
Question 31. Which amino acid when exposed to ninhydrin produces a brown color?
  1.    Valine
  2.    Asparagine
  3.    Alanine
  4.    Proline
 Discuss Question
Answer: Option B. -> Asparagine
Question 32. Coomassie Blue stains the proteins by reacting with
  1.    free c-termini
  2.    peptide bonds
  3.    aromatic ring
  4.    arginine residues
 Discuss Question
Answer: Option D. -> arginine residues
Question 33. The α-amino acids have a carboxyl group with a pK around __________ , and an amino group with a pK near __________ .
  1.    1.1, and 12.1
  2.    3.3, and 10.5
  3.    6.5, and 8.0
  4.    2.2, and 9.4
 Discuss Question
Answer: Option D. -> 2.2, and 9.4

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