Question 1

Which of the following statements about complement proteins is false?

Accepted Answer

A) flag antigens for destruction 
B) can destroy pathogens directly 
C) enhance lymphocyte response 
D) exclusively bacterial DNA associated 
E) none of these are correct 
A) flag antigens for destruction 
B) can destroy pathogens directly 
C) enhance lymphocyte response 
D) exclusively bacterial DNA associated 
E) none of these are correct

Question 2

Interleukins (aka: cytokines) perform all of the following functions EXCEPT

Accepted Answer

A) stimulate inflammation. 
B) directly kill pathogens. 
C) stimulate T and B cell proliferation. 
D) activate natural killer cells. 
E) stimulate fever. 
A) stimulate inflammation. 
B) directly kill pathogens. 
C) stimulate T and B cell proliferation. 
D) activate natural killer cells. 
E) stimulate fever.

Question 3

The maximum concentration of antibody from the secondary immune response occurs between weeks

Accepted Answer

A) 2 and 3. 
B) 3 and 4. 
C) 4 and 5. 
D) 6 and 7. 
E) 9 and 10. 
A) 2 and 3. 
B) 3 and 4. 
C) 4 and 5. 
D) 6 and 7. 
E) 9 and 10.

Question 4

HIV is most commonly transferred by

Accepted Answer

A) casual contact. 
B) food. 
C) water. 
D) sexual intercourse. 
E) insect bites. 
A) casual contact. 
B) food. 
C) water. 
D) sexual intercourse. 
E) insect bites.

Question 5

Microbes that are harmless or even beneficial on the body's surfaces may cause __________ if they enter the body.

Accepted Answer

A) ulcers 
B) meningitis 
C) brain abscesses 
D) various cancers 
E) all of these 
A) ulcers 
B) meningitis 
C) brain abscesses 
D) various cancers 
E) all of these

Question 6

Lymphocytes ignore which of the following in most instances?

Accepted Answer

A) cells coated with complement proteins 
B) cells with antigens on their surface 
C) "self" cells with MHC markers 
D) cells with both antigen and self-MHC markers 
E) cells with damaged or mutant self-MHC markers 
A) cells coated with complement proteins 
B) cells with antigens on their surface 
C) "self" cells with MHC markers 
D) cells with both antigen and self-MHC markers 
E) cells with damaged or mutant self-MHC markers

Question 7

All EXCEPT which of the following may be pathogens today?

Accepted Answer

A) viruses 
B) bacteria 
C) fungi 
D) smallpox 
E) protozoans 
A) viruses 
B) bacteria 
C) fungi 
D) smallpox 
E) protozoans

Question 8

Microbes that enter the digestive system may be killed by

Accepted Answer

A) lysozyme. 
B) hydrochloric acid. 
C) protein-digesting enzymes. 
D) bile salts. 
E) any of these. 
A) lysozyme. 
B) hydrochloric acid. 
C) protein-digesting enzymes. 
D) bile salts. 
E) any of these.

Question 9

All of the following are true of severe immune deficiencies EXCEPT that

Accepted Answer

A) they are all contagious. 
B) AIDS is an example. 
C) SCID is an example. 
D) they make the afflicted susceptible to opportunistic pathogens. 
E) they may have a primary or secondary origin. 
A) they are all contagious. 
B) AIDS is an example. 
C) SCID is an example. 
D) they make the afflicted susceptible to opportunistic pathogens. 
E) they may have a primary or secondary origin.

Question 10

Kaposi's sarcoma is characteristic of people who have

Accepted Answer

A) AIDS. 
B) allergic reactions. 
C) a hypersensitive immune system. 
D) Graves' disease. 
E) severe allergies. 
A) AIDS. 
B) allergic reactions. 
C) a hypersensitive immune system. 
D) Graves' disease. 
E) severe allergies.

Question 11

Use the above figure to answer questions 
  
-The letter "B" from the above figure represents

Accepted Answer

A) complement. 
B) MHC markers with antigen expressed to the surface of a cell. 
C) lysosome fusing with a phagosome. 
D) plasma membranes fusing. 
E) MHC recycling. 
A) complement. 
B) MHC markers with antigen expressed to the surface of a cell. 
C) lysosome fusing with a phagosome. 
D) plasma membranes fusing. 
E) MHC recycling.

Question 12

The source of diversity for B and T cell receptors is

Accepted Answer

A) mitosis. 
B) meiosis. 
C) transcript processing. 
D) random recombination of genes. 
E) gene transcription. 
A) mitosis. 
B) meiosis. 
C) transcript processing. 
D) random recombination of genes. 
E) gene transcription.

Question 13

An effective vaccine does all of the following EXCEPT

Accepted Answer

A) produce a mild case of the disease. 
B) stimulate the production of effector T cells. 
C) cause memory cells to be formed. 
D) stimulate the production of effector B cells. 
E) produce passive immunity. 
A) produce a mild case of the disease. 
B) stimulate the production of effector T cells. 
C) cause memory cells to be formed. 
D) stimulate the production of effector B cells. 
E) produce passive immunity.

Question 14

The antibody molecule consists of how many polypeptide chains, including light and heavy chains?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 15

Which antibody forms a pentamer in blood?

Accepted Answer

A) IgG 
B) IgA 
C) IgD 
D) IgM 
E) IgE 
A) IgG 
B) IgA 
C) IgD 
D) IgM 
E) IgE

Question 16

Dendritic cells and macrophages enter __________ and alert T cells to threats.

Accepted Answer

A) the blood circulatory system 
B) lymph nodes 
C) the bone marrow 
D) body tissues 
E) the liver 
A) the blood circulatory system 
B) lymph nodes 
C) the bone marrow 
D) body tissues 
E) the liver

Question 17

Which of the following occurs subsequent to the invasion of bacteria into a wound?

Accepted Answer

A) complement activation 
B) capture of bacteria by lymph nodes 
C) binding of bacteria to B cells 
D) attraction of phagocytes by the chemotactic factors secreted by the bacteria 
E) all of these 
A) complement activation 
B) capture of bacteria by lymph nodes 
C) binding of bacteria to B cells 
D) attraction of phagocytes by the chemotactic factors secreted by the bacteria 
E) all of these

Question 18

All multi-celled eukaryotes have receptors that bind to PAMPs, which include

Accepted Answer

A) components of prokaryotic cell walls 
B) bacterial flagellum 
C) bacterial pilus proteins 
D) double stranded RNA 
E) all of these. 
A) components of prokaryotic cell walls 
B) bacterial flagellum 
C) bacterial pilus proteins 
D) double stranded RNA 
E) all of these.

Question 19

The first cells to encounter a threat to the body are usually the _________ as they patrol body __________.

Accepted Answer

A) neutrophils; surfaces 
B) macrophages; interstitial fluids 
C) mast cells; linings 
D) macrophages; tissues 
E) neutrophils; interstitial fluids 
A) neutrophils; surfaces 
B) macrophages; interstitial fluids 
C) mast cells; linings 
D) macrophages; tissues 
E) neutrophils; interstitial fluids

Question 20

What are responsible for the rapid mobilization of the immune response after a subsequent attack by a pathogen?

Accepted Answer

A) naive B cells 
B) naive T cells 
C) NK cells 
D) memory cells 
E) macrophages 
A) naive B cells 
B) naive T cells 
C) NK cells 
D) memory cells 
E) macrophages

Exam 38: Immunity

Which of the following statements about complement proteins is false?

Interleukins (aka: cytokines) perform all of the following functions EXCEPT

The maximum concentration of antibody from the secondary immune response occurs between weeks

HIV is most commonly transferred by

Microbes that are harmless or even beneficial on the body's surfaces may cause __________ if they enter the body.

Lymphocytes ignore which of the following in most instances?

All EXCEPT which of the following may be pathogens today?

Microbes that enter the digestive system may be killed by

All of the following are true of severe immune deficiencies EXCEPT that

Kaposi's sarcoma is characteristic of people who have

Use the above figure to answer questions -The letter "B" from the above figure represents

The source of diversity for B and T cell receptors is

An effective vaccine does all of the following EXCEPT

The antibody molecule consists of how many polypeptide chains, including light and heavy chains?

Which antibody forms a pentamer in blood?

Dendritic cells and macrophages enter __________ and alert T cells to threats.

Which of the following occurs subsequent to the invasion of bacteria into a wound?

All multi-celled eukaryotes have receptors that bind to PAMPs, which include

The first cells to encounter a threat to the body are usually the _________ as they patrol body __________.

What are responsible for the rapid mobilization of the immune response after a subsequent attack by a pathogen?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

The first cells to encounter a threat to the body are usually the _ as they patrol body __.