Microbiology Chapter 20,21 And 22
(Openstax)Test Questions with
Correct/Verified Answers 2026/2027.
An ELISA test is used to determine if a certain autoantibody is present in a serum sample. (T/F) -
Answer True
The agents in a test do not need to be refrigerated. (T/F) - Answer False
Sample dilutions do not need to be freshly prepared due to the nature of the ELISA test. (T/F) -
Answer False
All reagents and samples should be pipetted to the bottom of the wells. (T/F) - Answer True
With this graph, the concentration antibodies in the unknown serum cannot be determined.
(T/F) - Answer False
An antibody's specificity results from the antigen-binding site formed within the variable regions
—regions of the antibody that have unique patterns of _____________________ .
carbohydrates
proteins
amino acids
DNA - Answer amino acids
_____________, which can be determined experimentally, is a measure of the binding strength
between an antibody's binding site and an epitope,
all of these
Specificity
Affinity
Avidity - Answer Affinity
An __________________, which is a chemical that provokes a generalized activation of the
immune system that stimulates greater antibody production.
avidity
adjuvant
affinity
, adjunct - Answer adjuvant
Test _______________________ is the probability of getting a positive test result when the
patient is indeed infected.
specificity
culture
infectability
sensitivity - Answer sensitivity
Fluorescence-labeled antibodies against Streptococcus pyogenes (group A strep) can be used to
obtain a diagnosis of strep throat from a throat swab and the results can be obtained within:
weeks
days
minutes
hours - Answer minutes
In a sandwich ______________, the goal is to use antibodies to precisely quantify specific
antigen present in a solution, such as antigen from a pathogen, a serum protein, or a hormone
from the blood or urine.
ELISA
Assay
Immunochemistry
Immunoglobulin - Answer ELISA
The use of agglutination tests to identify streptococcal bacteria was developed in the 1920s by:
Issac Newton
Rebecca Lancefield
Galileo Galilei
Salmonella typhimurium - Answer Rebecca Lancefield
For many uses in the laboratory, polyclonal antibodies work well, but for some types of assays,
they lack sufficient ________ because they cross-react with inappropriate antigens.
reactivity
sensitivity
accuracy
specificity - Answer specificity
(Openstax)Test Questions with
Correct/Verified Answers 2026/2027.
An ELISA test is used to determine if a certain autoantibody is present in a serum sample. (T/F) -
Answer True
The agents in a test do not need to be refrigerated. (T/F) - Answer False
Sample dilutions do not need to be freshly prepared due to the nature of the ELISA test. (T/F) -
Answer False
All reagents and samples should be pipetted to the bottom of the wells. (T/F) - Answer True
With this graph, the concentration antibodies in the unknown serum cannot be determined.
(T/F) - Answer False
An antibody's specificity results from the antigen-binding site formed within the variable regions
—regions of the antibody that have unique patterns of _____________________ .
carbohydrates
proteins
amino acids
DNA - Answer amino acids
_____________, which can be determined experimentally, is a measure of the binding strength
between an antibody's binding site and an epitope,
all of these
Specificity
Affinity
Avidity - Answer Affinity
An __________________, which is a chemical that provokes a generalized activation of the
immune system that stimulates greater antibody production.
avidity
adjuvant
affinity
, adjunct - Answer adjuvant
Test _______________________ is the probability of getting a positive test result when the
patient is indeed infected.
specificity
culture
infectability
sensitivity - Answer sensitivity
Fluorescence-labeled antibodies against Streptococcus pyogenes (group A strep) can be used to
obtain a diagnosis of strep throat from a throat swab and the results can be obtained within:
weeks
days
minutes
hours - Answer minutes
In a sandwich ______________, the goal is to use antibodies to precisely quantify specific
antigen present in a solution, such as antigen from a pathogen, a serum protein, or a hormone
from the blood or urine.
ELISA
Assay
Immunochemistry
Immunoglobulin - Answer ELISA
The use of agglutination tests to identify streptococcal bacteria was developed in the 1920s by:
Issac Newton
Rebecca Lancefield
Galileo Galilei
Salmonella typhimurium - Answer Rebecca Lancefield
For many uses in the laboratory, polyclonal antibodies work well, but for some types of assays,
they lack sufficient ________ because they cross-react with inappropriate antigens.
reactivity
sensitivity
accuracy
specificity - Answer specificity
