Biosensor - detection methods

The sensitivity of a sensor is a measure of:

• Its accuracy

• Its ability to detect small changes in input

• Its power consumption

• Its response time

A piezoelectric sensor is commonly used to measure:

• Temperature

• Light intensity

• Pressure

• Magnetic fields

What is a biosensor?

• A medical instrument used for surgeries

• A device that measures biological parameters using a biological recognition element

• A type of DNA sequencing tool

• A device that detects chemical reactions in a laboratory

Bio receptor molecules in biosensors are responsible for:

• Signal amplification

• Biological recognition of target molecules

• Power generation

• Signal processing

Which of the following is NOT a common detection method used in biosensors?

• Optical detection

• Electrochemical detection

• Magnetic resonance imaging (MRI)

• Piezoelectric detection

In electrochemical biosensors, what is measured to detect the target analyte?

• Heat generated

• Changes in pH

• Electric current, voltage, or impedance

• Sound waves

What type of detection method uses light intensity or wavelength changes to detect target molecules?

• Optical detection

• Electrochemical detection

• Thermal detection

• Magnetic detection

Surface plasmon resonance (SPR) is an example of which type of detection method?

• Thermal

• Optical

• Piezoelectric

• d) Electrochemical

Piezoelectric biosensors measure changes in the mass of a sensor surface.

• True

• False

Fluorescent labeling is a technique used in electrochemical detection.

• True

• False