A-Level Biology OCR A
Biosensors Immobilised Describe Principle Work Sensors Biological Components
| Front |
Describe in principle how biosensors work. |
| Back |
Biosensors - sensors that use biological components to determine the presence and conc of molecules such as glucose- Molecular recognition - a protein or single strand of DNA is immobilised to surface which will interact with or bind to the specific molecule under investigation
- Transduction - interaction causes change in a transducer (detects changes in pH and produces response such as release of immobilised dye on a test strip or an electric current)
- Display - the result becomes visible (quantiative or qualitative signal)
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A-Level Biology OCR A