Question

_______________ 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

The question was posed to me in an interview.

This is a very interesting question from Biosensors topic in section Biosensors of Enzyme Technology

Answer 1

Correct option is (b) Potentiometric

To elaborate: Potentiometric biosensors are those in which the changes in the distribution of charges causing an electrical potential to be produced. Calorimetric biosensors are those in which the physical change is the heat output (or absorbed) by the reaction. Optical biosensors involve light output during the reaction as a physical change. Amperometric biosensors are those which involve the movement of electrons produced in a redox reaction as a physical change given to a transducer.