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MCQs

Total Questions : 35 | Page 4 of 4 pages
Question 31. Which of the following statement is not true for catalysis by approximation?
  1.    Change in conformation 3D structure of protein from low activity form to high activity form
  2.    To make reactants proximal to each other
  3.    This proximity raises effective concentration over that of the reactants free in solution and lead to rate acceleration
  4.    To quantify some proximity effects, model studies were carried out
 Discuss Question
Answer: Option A. -> Change in conformation 3D structure of protein from low activity form to high activity form
Answer: (a).Change in conformation 3D structure of protein from low activity form to high activity form
Question 32. Which of the following is not true for covalent catalysis?
  1.    A number of coenzymes for covalent adducts generating new electrophilic groups which can function as electron sink
  2.    These adduct forming coenzymes leads to increase in rate acceleration
  3.    About 100 enzymes show covalent intermediates during catalysis
  4.    Hydrolysis of acetyl imidazole is an example of this type of catalysis
 Discuss Question
Answer: Option D. -> Hydrolysis of acetyl imidazole is an example of this type of catalysis
Answer: (d).Hydrolysis of acetyl imidazole is an example of this type of catalysis
Question 33. Which of the following is not involved in covalent catalysis?
  1.    Bases which catalyze the reaction by accepting a proton
  2.    Electron rich nucleophilic function group of amino acid side chain
  3.    Electron deficient electrophilic portion of substrate
  4.    Acylated, phosphorylated or glycosylated enzyme nucleophile as covalent intermediate
 Discuss Question
Answer: Option A. -> Bases which catalyze the reaction by accepting a proton
Answer: (a).Bases which catalyze the reaction by accepting a proton
Question 34. The reaction in the diagram belongs to which type of catalysis?The Reaction In The Diagram Belongs To Which Type Of Catalys...
  1.    Strain distortion and conformational change
  2.    Approximation catalysis
  3.    Acid base catalysis
  4.    Covalent catalysis
 Discuss Question
Answer: Option C. -> Acid base catalysis
Answer: (c).Acid base catalysis
Question 35. Which type of assay does the following reaction represent?Which Type Of Assay Does The Following Reaction Represent?
  1.    Continuous assay
  2.    Coupled assay
  3.    Enzymatic assay technique
  4.    Discontinuous assay
 Discuss Question
Answer: Option A. -> Continuous assay
Answer: (a).Continuous assay

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