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Biosensors: Components and Functions

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Questions and Answers

What percentage of the heat generated in the reaction may be registered as a temperature change in the sample stream?

50%

80% (correct)

90%

60%

What is the effect of higher temperatures on the resistance of a thermistor?

It reverses the resistance

It decreases the resistance (correct)

It has no effect on the resistance

It increases the resistance

What is the purpose of the reference thermistor in the calorimetric biosensor?

To provide a reference point for temperature measurement (correct)

To measure the temperature of the sample stream

To measure the temperature of the aluminium block

To determine the enthalpy change

What is calorimetry typically used to measure in biophysics?

The amount of energy absorbed or released in biochemical reactions Signup and view all the answers

What is an example of an application of calorimetry in biophysics?

Determining the amount of energy necessary to unwind a DNA helix Signup and view all the answers

What is the primary function of a fluorophore in a molecule?

To emit light at a longer wavelength Signup and view all the answers

What is the main application of fluorescence spectroscopy in biology?

To characterize and identify molecules Signup and view all the answers

What is the purpose of fluorescent tagging in biology?

To track the movement of molecules through biological processes Signup and view all the answers

What is the operating principle of potentiometric biosensors?

Measuring the change in voltage during a reaction Signup and view all the answers

What is detected by potentiometric biosensors?

The change in potential on the interface between the metal and solution Signup and view all the answers