Question 1

The measurable strength of binding of antibody to antigen is called

Accepted Answer

A) binding affinity. 
B) epitope. 
C) tolerance. 
D) virulence. 
A) binding affinity. 
B) epitope. 
C) tolerance. 
D) virulence. A

Question 2

How is immune memory beneficial to a host organism?

Accepted Answer

Immune memory provides the host with the ability to immediately resist previously encountered pathogens.After the initial encounter with an antigen,the host is stimulated to produce effective antigen-activated antibodies,or TCRs.A subsequent exposure to the same antigen stimulates rapid production of large quantities of the same T cells or antibodies for future protection.

Question 3

Which of the following does NOT influence immunogenicity?

Accepted Answer

A) the routes of administration 
B) foreign nature of the immunogen to the host 
C) solubility 
D) All of these influence immunogenicity. 
A) the routes of administration 
B) foreign nature of the immunogen to the host 
C) solubility 
D) All of these influence immunogenicity. D

Question 4

Which of the following are found on the surfaces of ALL nucleated cells?

Accepted Answer

A) Class I MHC proteins 
B) Class II MHC proteins 
C) G proteins 
D) M proteins 
A) Class I MHC proteins 
B) Class II MHC proteins 
C) G proteins 
D) M proteins

Question 5

What are the major antigenic barriers for tissue transplantation from one individual to another?

Accepted Answer

In different individuals,MHC proteins ar

Question 6

T cell-target cell interactions induce specialized Tc cells to produce ________ that kill virus-infected target cells.

Accepted Answer

A) perforins 
B) granulozymes 
C) leukocidins 
D) pyogens 
A) perforins 
B) granulozymes 
C) leukocidins 
D) pyogens

Question 7

CD4 and CD8 proteins are used for in vitro tests as T cell markers to differentiate TH cells from TC cells.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following enzymes are NOT secreted by TH1 to activate macrophages?

Accepted Answer

A) granulocyte-monocyte colony stimulating factor 
B) interferon gamma 
C) TNF-α 
D) fibrin 
A) granulocyte-monocyte colony stimulating factor 
B) interferon gamma 
C) TNF-α 
D) fibrin

Question 9

Which of the following is associated with mucosa-associated lymph tissue that produces IgA?

Accepted Answer

A) breast milk 
B) red blood cells 
C) blood serum 
D) small intestine 
A) breast milk 
B) red blood cells 
C) blood serum 
D) small intestine

Question 10

When dendritic cells ingest antigen,they migrate to the ________,where they present the antigen to T lymphocytes.

Accepted Answer

A) kidneys 
B) lymph nodes 
C) thymus 
D) spleen 
A) kidneys 
B) lymph nodes 
C) thymus 
D) spleen

Question 11

Which antibodies bind complement?

Accepted Answer

A) IgA 
B) IgB 
C) IgM 
D) IgC 
A) IgA 
B) IgB 
C) IgM 
D) IgC

Question 12

In the adaptive immune response,effective immunity cannot be detected for several days after the first contact with the pathogen.

Accepted Answer

A) True 
 B)False

Question 13

The presence of neutrophils in higher than normal numbers in the blood or at a site of inflammation indicates an active response to a current infection.

Accepted Answer

A) True 
 B)False

Question 14

IgE is found in extremely small amounts in serum.

Accepted Answer

A) True 
 B)False

Question 15

How do NK cells discriminate between normal,healthy cells and virus-infected or tumor cells?

Accepted Answer

NK cells use special MHI receptors to re

Question 16

Organisms such as Streptococcus pyogenes and Staphylococcus aureus that produce leukocidins are called ________ pathogens.

Accepted Answer

A) pyogenic 
B) radical 
C) enterotoxigenic 
D) hemorrhagic 
A) pyogenic 
B) radical 
C) enterotoxigenic 
D) hemorrhagic

Question 17

The antigen-binding site of ALL antibodies form by interactions between the variable domains of the heavy and light chains.

Accepted Answer

A) True 
 B)False

Question 18

Why must the adaptive immune system develop a capacity to discriminate between foreign antigens and host antigens?

Accepted Answer

Because all macromolecules in the host a

Question 19

________ are cytotoxins produced by Tc cells that cause apoptosis.

Accepted Answer

A) Perforins 
B) Granzymes 
C) Phagocytes 
D) Macrophages 
A) Perforins 
B) Granzymes 
C) Phagocytes 
D) Macrophages

Question 20

Antibodies are found in

Accepted Answer

A) milk. 
B) mucosal secretions. 
C) serum. 
D) milk,mucosal secretions,and serum. 
A) milk. 
B) mucosal secretions. 
C) serum. 
D) milk,mucosal secretions,and serum.

Exam 25: Immune Mechanisms

The measurable strength of binding of antibody to antigen is called

How is immune memory beneficial to a host organism?

Which of the following does NOT influence immunogenicity?

Which of the following are found on the surfaces of ALL nucleated cells?

What are the major antigenic barriers for tissue transplantation from one individual to another?

T cell-target cell interactions induce specialized Tc cells to produce ________ that kill virus-infected target cells.

CD4 and CD8 proteins are used for in vitro tests as T cell markers to differentiate TH cells from TC cells.

Which of the following enzymes are NOT secreted by TH1 to activate macrophages?

Which of the following is associated with mucosa-associated lymph tissue that produces IgA?

When dendritic cells ingest antigen,they migrate to the ________,where they present the antigen to T lymphocytes.

Which antibodies bind complement?

In the adaptive immune response,effective immunity cannot be detected for several days after the first contact with the pathogen.

The presence of neutrophils in higher than normal numbers in the blood or at a site of inflammation indicates an active response to a current infection.

IgE is found in extremely small amounts in serum.

How do NK cells discriminate between normal,healthy cells and virus-infected or tumor cells?

Organisms such as Streptococcus pyogenes and Staphylococcus aureus that produce leukocidins are called ________ pathogens.

The antigen-binding site of ALL antibodies form by interactions between the variable domains of the heavy and light chains.

Why must the adaptive immune system develop a capacity to discriminate between foreign antigens and host antigens?

________ are cytotoxins produced by Tc cells that cause apoptosis.

Antibodies are found in

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

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