MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Enzyme Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a biosensor ___________ is one which involves subtracting a reference baseline signal from the sample signal. |
| A. | signal processor |
| B. | amplifier |
| C. | detector |
| D. | transducer |
| Answer» B. amplifier | |
| 2. |
What property of enzyme doesn t make it an excellent analytical reagent? |
| A. | Specificity |
| B. | Selectivity |
| C. | Piezo-electric biosensor |
| D. | Location of the enzyme |
| Answer» D. Location of the enzyme | |
| 3. |
_______________ biosensors are those in which the changes in the distribution of charges causing an electrical potential to be produced. |
| A. | Calorimetric |
| B. | Potentiometric |
| C. | Optical |
| D. | Amperometric |
| Answer» C. Optical | |
| 4. |
There are 3 so called generation of biosensors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Distribution of charges: Potentiometric biosensor:: Mass of reactants or products: _________ |
| A. | Optical biosensor |
| B. | Calorimetric biosensor |
| C. | Piezo-electric biosensor |
| D. | Amperometric biosensor |
| Answer» D. Amperometric biosensor | |
| 6. |
When the physical change produced in a biosensor is due to the movement of electrons produced in a redox reaction, the biosensor is referred to as ____________ |
| A. | calorimetric biosensor |
| B. | potentiometric biosensor |
| C. | piezo-electric biosensor |
| D. | amperometric biosensor |
| Answer» E. | |
| 7. |
Heat output: calorimetric biosensor:: light output: ____________ |
| A. | Optical biosensor |
| B. | Piezo-electric biosensor |
| C. | Potentiometric biosensor |
| D. | Amperometric biosensor |
| Answer» B. Piezo-electric biosensor | |
| 8. |
If the physical change accompanying the reaction is heat output, the biosensors are referred to as _________________ |
| A. | potentiometric biosensors |
| B. | optical biosensors |
| C. | calorimetric biosensors |
| D. | amperometric biosensors |
| Answer» D. amperometric biosensors | |
| 9. |
Immobilized enzymes are more preferred over free enzymes in producing biosensors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following property is not possessed by biosensors? |
| A. | The probe used in the biosensor must be tiny and biocompatible, having no toxic or antigenic effects |
| B. | The biosensor should be cheap, small, portable and capable of being used by semi-skilled operators |
| C. | There should be a market for the biosensor |
| D. | The specificity of substrate binding is mediated by spatial arrangement of atoms in an enzyme s substrate binding site as well as substrate. |
| Answer» E. | |
| 11. |
Which of the following features is not possessed by biosensor? |
| A. | The biocatalyst used in the biosensor must be highly specific for the purpose of the analyses |
| B. | The reaction occurring in the biosensor should be as independent of such physical parameters |
| C. | Active site is mainly constituted by non-polar amino acids for catalysis to take place |
| D. | The response from the biosensors should be accurate, precise, reproducible and linear |
| Answer» D. The response from the biosensors should be accurate, precise, reproducible and linear | |
| 12. |
Which of the following statements is not true for biosensors? |
| A. | Biosensors convert a biological signal into an electrical signal |
| B. | Biosensors are used to determine the concentration of substances and other parameters of biological interest even where they do not utilize a biological system directly |
| C. | Biosensors utilize the different biological systems such as enzymes, whole cell metabolism, ligand binding and the antibody-antigen reaction |
| D. | Biosensor consists of a vessel, or series of vessels, used to perform a desired conversion by enzymic means |
| Answer» E. | |