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BGM3039 Biosensors Exam Latest Update
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BGM3039 Biosensors ExamLatest Update
What is a biosensor? - Answer • Biosensors are chemical sensing device in which a
biological recognition entity is coupled to a transducer to allow quantitative and
qualitative development of some complex biochemical parameter
What is the basic principle of a biosensor? - Answer • Biosensors are chemical sensing
device in which a biological recognition entity is coupled to a transducer to allow
quantitative and qualitative development of some complex biochemical parameter
What are the 4 characteristics all biosensors should possess? - Answer • All biosensors
must exhibit 4 essential characteristics
1. Repeatability
2. Reproducibility
3. Specificity/Selectivity
4. Sensitivity
Name four clinical uses of biosensors - Answer o Long term implantable (Artificial
organs)
o Short term invasive (Beside glucose monitoring)
o Single shot (Home blood glucose monitoring)
o Multi analysis (Path lab glucose monitoring)
Name 3 non-clinical uses of biosensors - Answer o Single analysis (Fruit Ripening)
o Reactive monitoring (Pollution monitoring, fermentation processes)
o Environmental bioagent detection (anthrax, plague, cholera etc)
What are the 4 potential methods of Bioelement and transducer coupling? - Answer o
Membrane Entrapment
Semi-permeable membrane seperates analyte and the bioelement, sensor is attatched
to the bioelement
o Physical Adsorption
Dependant on vdw forces, hydrophobic forces, hydrogen bonds and ionic forces to
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