Question

Which electronic device is used in biosensors?

(a) Transmitter

(b) Receptor

(c) Transducer

(d) Electrolyte

I had been asked this question in an online interview.

Enquiry is from Monitoring and Control of Bioreactors in chapter Reactor Engineering of Bioprocess Engineering

Answer 1

Correct option is (c) Transducer

The best explanation: The preferred biological material like enzyme is preferred for conventional methods like physical or membrane entrapment and non covalent or covalent binding. The preferred biological material is in contact with the transducer. To produce a bound analyte through the analyte binds to the biological material which produces the electrical response to be measured. In some cases the analyte changed to a product and have some probability to associate with the release of heat, gases like oxygen, electrons or hydrogen ions.