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MCQs

Total Questions : 47 | Page 5 of 5 pages
Question 41. Which of the following is not explained by molecular orbital steering?
  1.    The juxtaposition of the side chain groups of amino-acid and the reactive groups of the substrate is not sufficient for proper catalysis
  2.    Overwhelm the vander waals repulsive forces that happen commonly between them
  3.    The active residues should guide the groups in the substrate for exact interaction by thermal vibration due to elevated temperature
  4.    Thermal vibration create motion in the active site amino acid side chain that direct reactive groups in the substrate to interact
 Discuss Question
Answer: Option C. -> The active residues should guide the groups in the substrate for exact interaction by thermal vibration due to elevated temperature
Answer: (c).The active residues should guide the groups in the substrate for exact interaction by thermal vibration due to elevated temperature
Question 42. The disruption of interactions between substrate and solvent is referred to as __________
  1.    desolvation
  2.    molecular orbital steering
  3.    protonation
  4.    deprotonation
 Discuss Question
Answer: Option A. -> desolvation
Answer: (a).desolvation
Question 43. Which of the following is termed as catalytic efficiency?
  1.    Kcat
  2.    Kₘ
  3.    Kcat/Kₘ
  4.    Vₘₐₓ
 Discuss Question
Answer: Option C. -> Kcat/Kₘ
Answer: (c).Kcat/Kₘ
Question 44. ______________ is defined as an enzyme molecule’s efficiency to convert maximum substrate molecules into product per unit time.
  1.    Catalytic efficiency
  2.    Miachelis Menten constant
  3.    Turn over number
  4.    Vₘₐₓ
 Discuss Question
Answer: Option C. -> Turn over number
Answer: (c).Turn over number
Question 45. Which of the following equation is Eadie-Hofstee plot equation?
  1.    \(\frac{1}{V_0} = \frac{K_m}{V_{max}} \frac{1}{[S]}+\frac{1}{V_{max}}\)
  2.    \(V_0=\frac{V_{max} [S]}{K_m+[S]}\)
  3.    \(V_0=K_m \frac{V_0}{S_0}+V_{max}\)
  4.    \(\frac{[S_0]}{V_0} = \frac{1}{V_{max}} [S_0]+\frac{K_m}{V_{max}} \)
 Discuss Question
Answer: Option C. -> \(V_0=K_m \frac{V_0}{S_0}+V_{max}\)
Answer: (c).\(V_0=K_m \frac{V_0}{S_0}+V_{max}\)
Question 46. The equation which is based on reciprocal form of Miachelis Menten equation at constant [Et] level is referred to as ______________
  1.    Eadie-Hofstee plot equation
  2.    Eisenthal and Cornish and Bowden plot equation
  3.    Lineweaver Burk equation
  4.    Hanes plot equation
 Discuss Question
Answer: Option B. -> Eisenthal and Cornish and Bowden plot equation
Answer: (b).Eisenthal and Cornish and Bowden plot equation
Question 47. A low Kₘ value points out a low affinity of an enzyme towards its substrate.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False

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