Home Topics Quiz Login

Biosensors MCQ Questions & Answers

Biosensors MCQs : This section focuses on the "Biosensors". These Multiple Choice Questions (MCQs) should be practiced to improve the Biosensors skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

_______________ converts biochemical events into measurable signals.

A. amplifier
B. opamp
C. rectifier
D. transducer

View Answer

Question 2

An example of biosensor, urea electrode makes use of which of the following electrodes?

A. Carbon dioxide electrode
B. Ammonia electrode
C. Fluoride electrode
D. Ammonium electrode

View Answer

Question 3

Biosensors measure glucose concentrations between which of the following ranges?

A. 10-1 to 10-2 M
B. 10-2 to 10-4 M
C. 10-1 to 10-4 M
D. 10-1 to 10-7 M

View Answer

Question 4

Blood glucose level measurement device uses a biosensor works on the principle of electrochemical.

A. True
B. False

View Answer

Question 5

Doppler velocimetry works on the principle of __________

A. frequency measurement of fiber optic sensor
B. amplitude measurement of fiber optic sensor
C. phase measurement of fiber optic sensor
D. time shift measurement of fiber optic sensor

View Answer

Question 6

Fluoroptic temperature sensors work on the principle of _______

A. thermistor
B. thermocouple
C. optical fiber
D. rtd

View Answer

Question 7

For constructing the glucose sensor, which of the following is used as a gel?

A. Urea
B. Urease
C. Acrylamide
D. Polyacrylamide

View Answer

Question 8

Home blood glucose measurement devices measure the glucose level through non-invasive method.

A. True
B. False

View Answer

Question 9

Home blood glucose sensor works on which principle?

A. electro-physiological
B. electrochemical
C. physio-chemical
D. chemical

View Answer

Question 10

In glucose electrode, glucose oxidase has been coupled to an electrode by which of the following materials?

A. Ferrocene derivatives
B. Urease
C. Polyacrylamide
D. Biochips

View Answer

Question 11

In glucose sensor, a measure of change in oxygen value is a measure of the glucose value.

A. True
B. False

View Answer

Question 12

Monopolar needle electrode have a coating of which material over the stainless steel wires which are bare only at the tips?

A. carbon
B. calcium
C. sodium
D. teflon

View Answer

Question 13

Nanoscopic optical biosensors have fast response time but the sensitivity is reduced.

A. True
B. False

View Answer

Question 14

The biological response of the biosensor is determined by ______

A. biocatalytic membrane
B. physio-chemical membrane
C. chemical membrane
D. artificial membrane

View Answer

Question 15

The chemical reaction of glucose with oxygen is catalyzed in the presence of ________

A. glucose oxidase
B. monoglucose carbodase
C. glusoce dioxidase
D. biglucose oxidase

View Answer

Question 16

Transducers employed in the bulk of enzyme electrodes use which of the following principles?

A. Amperometric
B. Optical
C. Magnetic
D. Colorimetric

View Answer

Question 17

Which of the following biosensors use the movement of electrons produced during redox reactions?

A. Amperometric biosensor
B. Potentiometric biosensors
C. Piezo-electric biosensors
D. Optical biosensors

View Answer

Question 18

Which of the following is not a characteristic of the immobilized enzymes?

A. They cannot be re-used
B. It produces reproducible results
C. Stability exists
D. Same catalytic activity is present for number of analysis

View Answer

Question 19

Which of the following is the physico-chemical component?

A. Enzymes
B. Anti-bodies
C. Transducer
D. Cells or tissues

View Answer

Question 20

Which of these biosensors use the principle of heat released or absorbed by a reaction?

A. Potentiometric biosensor
B. Optical biosensors
C. Piezo-electric biosensors
D. Calorimetric biosensors

View Answer

Question 21

_______________ 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

View Answer

Question 22

Distribution of charges: Potentiometric biosensor:: Mass of reactants or products: _________

A. Optical biosensor
B. Calorimetric biosensor
C. Piezo-electric biosensor
D. Amperometric biosensor

View Answer

Question 23

Heat output: calorimetric biosensor:: light output: ____________

A. Optical biosensor
B. Piezo-electric biosensor
C. Potentiometric biosensor
D. Amperometric biosensor

View Answer

Question 24

Immobilized enzymes are more preferred over free enzymes in producing biosensors.

A. True
B. False

View Answer

Question 25

In a biosensor ___________ is one which involves subtracting a ‘reference’ baseline signal from the sample signal.

A. signal processor
B. amplifier
C. detector
D. transducer

View Answer

Question 26

There are 3 so called generation of biosensors.

A. True
B. False

View Answer

Question 27

What property of enzyme doesn’t make it an excellent analytical reagent?

A. Specificity
B. Selectivity
C. Piezo-electric biosensor
D. Location of the enzyme

View Answer

Question 28

When the physical change produced in a biosensor is due to the movement of electrons produced in a redox reaction, the biosensor is referred to as ____________

A. calorimetric biosensor
B. potentiometric biosensor
C. piezo-electric biosensor
D. amperometric biosensor

View Answer

Question 29

Which of the following features is not possessed by biosensor?

A. The biocatalyst used in the biosensor must be highly specific for the purpose of the analyses
B. The reaction occurring in the biosensor should be as independent of such physical parameters
C. Active site is mainly constituted by non-polar amino acids for catalysis to take place
D. The response from the biosensors should be accurate, precise, reproducible and linear

View Answer

Question 30

Which of the following property is not possessed by biosensors?

A. The probe used in the biosensor must be tiny and biocompatible, having no toxic or antigenic effects
B. The biosensor should be cheap, small, portable and capable of being used by semi-skilled operators
C. There should be a market for the biosensor
D. The specificity of substrate binding is mediated by spatial arrangement of atoms in an enzyme’s substrate binding site as well as substrate.

View Answer

Question 31

Which of the following statements is not true for biosensors?

A. Biosensors convert a biological signal into an electrical signal
B. Biosensors are used to determine the concentration of substances and other parameters of biological interest even where they do not utilize a biological system directly
C. Biosensors utilize the different biological systems such as enzymes, whole cell metabolism, ligand binding and the antibody-antigen reaction
D. Biosensor consists of a vessel, or series of vessels, used to perform a desired conversion by enzymic means

View Answer