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MCQs

Total Questions : 76 | Page 6 of 8 pages
Question 51. Potentiometric biosensors uses _______________ in order to transduce the biological reaction into an electrical signal.
  1.    ion-selective electrodes
  2.    clark oxygen electrode
  3.    thermistors
  4.    colorimetric test strips
 Discuss Question
Answer: Option A. -> ion-selective electrodes
Answer: (a).ion-selective electrodes
Question 52. ____________ is one in which has a thin membrane of a specific ion conductor made from a mixture of silver sulphide and a silver halide.
  1.    Glass electrode
  2.    Solid-state electrode
  3.    Glass pH electrode
  4.    Clark oxygen electrode
 Discuss Question
Answer: Option B. -> Solid-state electrode
Answer: (b).Solid-state electrode
Question 53. Which of the following ion-selective electrode consist of gas permeable membrane?
  1.    Glass electrode
  2.    Solid-state electrode
  3.    Glass pH electrode
  4.    Clark oxygen electrode
 Discuss Question
Answer: Option C. -> Glass pH electrode
Answer: (c).Glass pH electrode
Question 54. Which of the following biosensors function by the production of a current when a potential is applied between two electrodes?
  1.    Calorimetric biosensor
  2.    Potentiometric biosensor
  3.    Optical biosensor
  4.    Amperometric biosensor
 Discuss Question
Answer: Option D. -> Amperometric biosensor
Answer: (d).Amperometric biosensor
Question 55. What does ‘Y’ represent in the following reaction?
Amygdalin + 2H₂O \(\underset{X}{\rightarrow}\) 2 Glucose + benzaldehyde + H⁺ + CN⁻
  1.    Peroxidase
  2.    L-aminoacid oxidase
  3.    β – glucosidase
  4.    Urease
 Discuss Question
Answer: Option C. -> β – glucosidase
Answer: (c).β – glucosidase
Question 56. What does ‘X’ represent in the following reaction?
Penicillin \(\underset{X}{\rightarrow}\) Penicilloic acid + H⁺
  1.    Asparginase
  2.    Lipase
  3.    Urease
  4.    Penicillinase
 Discuss Question
Answer: Option D. -> Penicillinase
Answer: (d).Penicillinase
Question 57. The simplest amperometric biosensor is ____________
  1.    glass electrode
  2.    thermistor
  3.    clark oxygen electrode
  4.    solid-state electrode
 Discuss Question
Answer: Option C. -> clark oxygen electrode
Answer: (c).clark oxygen electrode
Question 58. Where does the following reaction occur?
O₂ + 4H⁺ + 4e⁻ → 2H₂O
  1.    Pt cathode
  2.    Pt anode
  3.    Ag anode
  4.    Ag cathode
 Discuss Question
Answer: Option A. -> Pt cathode
Answer: (a).Pt cathode
Question 59. Use of mediators in amperometric biosensor is required.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 60. Which of the following biosensor determines glucose concentrations by the use of an immobilized glucose oxidase membrane?
  1.    Optical biosensor
  2.    Amperometric biosensor
  3.    Calorimetric biosensor
  4.    Potentiometric biosensor
 Discuss Question
Answer: Option B. -> Amperometric biosensor
Answer: (b).Amperometric biosensor

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