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?

<p>The amount of energy absorbed or released in biochemical reactions (C)</p> Signup and view all the answers

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

<p>Determining the amount of energy necessary to unwind a DNA helix (B)</p> Signup and view all the answers

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

<p>To emit light at a longer wavelength (C)</p> Signup and view all the answers

What is the main application of fluorescence spectroscopy in biology?

<p>To characterize and identify molecules (A)</p> Signup and view all the answers

What is the purpose of fluorescent tagging in biology?

<p>To track the movement of molecules through biological processes (B)</p> Signup and view all the answers

What is the operating principle of potentiometric biosensors?

<p>Measuring the change in voltage during a reaction (B)</p> Signup and view all the answers

What is detected by potentiometric biosensors?

<p>The change in potential on the interface between the metal and solution (D)</p> Signup and view all the answers

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