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Which of the following is a characteristic of photometric biosensors?

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Which of the following is a characteristic of photometric biosensors?

(a) Detects the change in light adsorption

(b) Detects the photon out for luminescent

(c) Detects the movement of electrons between electrodes

(d) Detects the angle at which electrons are emitted

I had been asked this question in exam.

My question is taken from Biosensor Variants topic in chapter Biosensor Technology & Regulatory Issues in Biotechnology of Drug Biotechnology

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Right choice is (b) Detects the photon out for luminescent

Best explanation: Photon output for a luminescent or fluorescent process can be detected with photomultiplier tubes or photodiode systems. The light produced can be detected photometrically by use if high voltage photomultiplier tubes.

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