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MCQs

Total Questions : 47 | Page 4 of 5 pages
Question 31. Which of the following assumption was not made in rapid equilibrium model?
  1.    Flexible nature of enzymes
  2.    [S] >> [E]
  3.    [E]+[S]\(\rightleftharpoons\)[ES]
  4.    It is the initial substrate concentration [So] that determines efficacy of an enzyme to mediate a reaction
 Discuss Question
Answer: Option A. -> Flexible nature of enzymes
Answer: (a).Flexible nature of enzymes
Question 32. Which of the following is based on rearrangement of Lineweaver Burk plot equation by multiplication of [S₀] factor?
  1.    Hanes plot equation
  2.    Eadie-Hofstee plot equation
  3.    Miachelis Menten equation
  4.    Eisenthal and Cornish and Bowden plot equation
 Discuss Question
Answer: Option A. -> Hanes plot equation
Answer: (a).Hanes plot equation
Question 33. Miachelis Menten model is also referred to as “rapid equilibrium model”.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 34. ___________ is defined as the enzyme’s binding efficiency with its appropriate substrate through optimized multiple non-covalent interactions.
  1.    Kₘ
  2.    Kcat
  3.    Catalytic efficiency
  4.    Vₘₐₓ
 Discuss Question
Answer: Option A. -> Kₘ
Answer: (a).Kₘ
Question 35. What is the ratio of V₀/Vₘₐₓ when [S] = 10Kₘ?
  1.    1/2
  2.    10/11
  3.    4/5
  4.    5/6
 Discuss Question
Answer: Option B. -> 10/11
Answer: (b).10/11
Question 36. 4*10⁷: Catalase :: 25: ___________
  1.    Protease
  2.    Amylase
  3.    Glucose isomerase
  4.    Creatinine kinase
 Discuss Question
Answer: Option C. -> Glucose isomerase
Answer: (c).Glucose isomerase
Question 37. What does the equation \(V_0=\frac{V_{max} [S]}{K_m+[S]}\) represent?
  1.    Lineweaver Burk equation
  2.    Miachelis Menten equation
  3.    Eadie-Hofstee plot equation
  4.    Hanes plot equation
 Discuss Question
Answer: Option B. -> Miachelis Menten equation
Answer: (b).Miachelis Menten equation
Question 38. When the free energy occurs at standard conditions, it is termed as ______________
  1.    Activation energy
  2.    pKₐ
  3.    Standard free energy change
  4.    Gibbs free energy
 Discuss Question
Answer: Option C. -> Standard free energy change
Answer: (c).Standard free energy change
Question 39. Which of the following is not true for substrate collision theory?
  1.    Both enzyme and substrate stumble upon each other
  2.    Both enzyme and substrate provide good molecular orbital interactions
  3.    Specificity of the substrate binding site
  4.    Both enzyme and substrate should be flexible in forming transition states
 Discuss Question
Answer: Option C. -> Specificity of the substrate binding site
Answer: (c).Specificity of the substrate binding site
Question 40. If the catalysis involves participation of small organic molecules, cofactors, and amino-acid side chains from the enzyme is termed as ____________
  1.    specific acid base catalysis
  2.    general acid base catalysis
  3.    substrate collision theory
  4.    lock and key model
 Discuss Question
Answer: Option B. -> general acid base catalysis
Answer: (b).general acid base catalysis

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