MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is represented by the following equation?I = nFAvA |
| A. | Frequency |
| B. | Current |
| C. | Electrical resistance |
| D. | Electrical potential |
| Answer» C. Electrical resistance | |
| 2. |
Amperometric biosensors for flavo-oxidase enzymes illustrates three generations in the development of a biosensor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following represents a commonly used family of mediators? |
| A. | Pyruvate kinase |
| B. | Hexokinase |
| C. | Ferrocenes |
| D. | Lactate oxidase |
| Answer» D. Lactate oxidase | |
| 4. |
Which of these properties is not true for mediators? |
| A. | Mediators must react rapidly with a reduced form of enzyme |
| B. | Mediators must be sufficiently soluble in oxidized and reduced forms |
| C. | The reduced form of the mediator should not readily react with oxygen |
| D. | Increasing the heat output |
| Answer» E. | |
| 5. |
Use of mediators in amperometric biosensor is required. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the biosensor is presented in the diagram? |
| A. | Immunosensor |
| B. | Piezo-electric biosensor |
| C. | Potentiometric biosensor |
| D. | Optical biosensor |
| Answer» D. Optical biosensor | |
| 7. |
Which of the following biosensor determines glucose concentrations by the use of an immobilized glucose oxidase membrane? |
| A. | Optical biosensor |
| B. | Amperometric biosensor |
| C. | Calorimetric biosensor |
| D. | Potentiometric biosensor |
| Answer» C. Calorimetric biosensor | |
| 8. |
Where does the following reaction occur?O2 + 4H+ + 4e– → 2H2O |
| A. | Pt cathode |
| B. | Pt anode |
| C. | Ag anode |
| D. | Ag cathode |
| Answer» B. Pt anode | |
| 9. |
The following reaction occurs at __________4Ag0 + 4Cl– → 4AgCl + 4e– |
| A. | Pt cathode |
| B. | Ag cathode |
| C. | Ag anode |
| D. | Pt anode |
| Answer» D. Pt anode | |
| 10. |
The simplest amperometric biosensor is ____________ |
| A. | glass electrode |
| B. | thermistor |
| C. | clark oxygen electrode |
| D. | solid-state electrode |
| Answer» D. solid-state electrode | |
| 11. |
Which of the following biosensors function by the production of a current when a potential is applied between two electrodes? |
| A. | Calorimetric biosensor |
| B. | Potentiometric biosensor |
| C. | Optical biosensor |
| D. | Amperometric biosensor |
| Answer» E. | |