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Match items in group 1 with correct options from those given in group 2
Group 1
P.Amperometric biosensor
Q.Evanescent wave biosensor
R.Calorimetric biosensor
S.Potentiometric biosensor
Group 2
1.Light beam
2.Flux of redox electrons
3.Field effect transistors
4.Exothermic reaction
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- P-3, Q-4, R-2, S-1
- P-2, Q-l, R-4, S-3
- P-3, Q-2, R-4, S-1
- P-2, Q-4, R-3, S-1
Correct Option: B
Amperometric biosensors function by the production of a current generated by flux of redox electrons when a potential is applied between two electrodes.
Evanescent wave biosensors are fiber-optic sensors which detect the refractive index of the light beams.
Many enzyme catalysed reactions are exothermic, generating heat, this principle is used as a basis for measuring the rate of reaction and, hence, analyze concentration by calorimetric biosensors.
Potentiometric biosensors make use of ion-selective electrodes in order to transduce the biological reaction into an electrical signal. A recent development from ion-selective electrodes is the production of ion-selective field effect transistors (ISFETs) and their biosensor use as enzyme-linked field effect transistors.
