Question 1

A disease-causing microorganism or virus is referred to as a(n)

Accepted Answer

A)  avirulent infection. 
B)  colony. 
C)  commensal. 
D)  pathogen. 
A)  avirulent infection. 
B)  colony. 
C)  commensal. 
D)  pathogen.

Question 2

The lack of susceptibility to diseases of other species in humans may be due to the

Accepted Answer

A)  secretion of exotoxins. 
B)  presence of endotoxins. 
C)  action of IL-2. 
D)  lack of receptors that are recognized by adherence factors. 
A)  secretion of exotoxins. 
B)  presence of endotoxins. 
C)  action of IL-2. 
D)  lack of receptors that are recognized by adherence factors.

Question 3

The suffix -emia means in the

Accepted Answer

A)  body. 
B)  lymph. 
C)  interstitial tissue. 
D)  blood. 
A)  body. 
B)  lymph. 
C)  interstitial tissue. 
D)  blood.

Question 4

During incubation and convalescence a person may still spread infectious organisms.

Accepted Answer

A) True 
 B)False

Question 5

A relationship in which one partner benefits and the other is harmed is termed

Accepted Answer

A)  commensalism. 
B)  parasitism. 
C)  independence. 
D)  mutualism. 
A)  commensalism. 
B)  parasitism. 
C)  independence. 
D)  mutualism.

Question 6

The normal microbiota provides protection against potentially harmful organisms and stimulates the immune system. Why would the immune responses to members of the normal microbiota cross-react with pathogens?

Accepted Answer

A)  Because one person's normal microbiota is another person's pathogen-when we pick up 'normal' microbes from a different person, they will always cause infection within us. 
B)  Because pathogens are oftentimes more virulent strains of our own normal microbial flora, so they will 'look' roughly the same to our immune system (and be acted upon by our immune responses). 
C)  Because the normal flora keeps the adaptive immune responses tuned-up, active, and ready to respond to broad, general categories of microbes (i.e. Gram positive vs. Gram negative microbes, viruses, etc.). 
D)  Because the immune system is a 'use it or lose it' system. If it isn't used on a regular basis, we completely lose the ability to respond to pathogens. The normal flora keeps the system going so that it can be ready to respond to such pathogens when we're exposed to them. 
A)  Because one person's normal microbiota is another person's pathogen-when we pick up 'normal' microbes from a different person, they will always cause infection within us. 
B)  Because pathogens are oftentimes more virulent strains of our own normal microbial flora, so they will 'look' roughly the same to our immune system (and be acted upon by our immune responses). 
C)  Because the normal flora keeps the adaptive immune responses tuned-up, active, and ready to respond to broad, general categories of microbes (i.e. Gram positive vs. Gram negative microbes, viruses, etc.). 
D)  Because the immune system is a 'use it or lose it' system. If it isn't used on a regular basis, we completely lose the ability to respond to pathogens. The normal flora keeps the system going so that it can be ready to respond to such pathogens when we're exposed to them.

Question 7

Colonization of the body is inhibited by

Accepted Answer

A)  the shedding of skin cells. 
B)  the movement of mucus by cilia. 
C)  peristalsis. 
D)  the flushing action of the urinary tract. 
E)  All of the choices are correct. 
A)  the shedding of skin cells. 
B)  the movement of mucus by cilia. 
C)  peristalsis. 
D)  the flushing action of the urinary tract. 
E)  All of the choices are correct.

A disease-causing microorganism or virus is referred to as a(n)

The lack of susceptibility to diseases of other species in humans may be due to the

The suffix -emia means in the

During incubation and convalescence a person may still spread infectious organisms.

A relationship in which one partner benefits and the other is harmed is termed

The normal microbiota provides protection against potentially harmful organisms and stimulates the immune system. Why would the immune responses to members of the normal microbiota cross-react with pathogens?

Colonization of the body is inhibited by

Humans and the Microbial World

The Molecules of Life

Microscopy and Cell Structure

Dynamics of Prokaryotic Growth

Control of Microbial Growth

Metabolism: Fueling Cell Growth

The Blueprint of Life, From Dna to Protein

Bacterial Genetics

Biotechnology and Recombinant Dna

Identification and Classification of Prokaryotes

The Diversity of Prokaryotic Organisms

The Eukaryotic Members of the Microbial World

Viruses, Viroids and Prions

The Innate Immune Response

The Adaptive Immune Response

Immunologic Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Genitourinary Infections

Nervous System Infections

Blood and Lymphatic Infections

Hiv Disease and Complications of Immunodeficiency

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

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Exam 16: Host-Microbe Interactions

A disease-causing microorganism or virus is referred to as a(n)

The lack of susceptibility to diseases of other species in humans may be due to the

The suffix -emia means in the

During incubation and convalescence a person may still spread infectious organisms.

A relationship in which one partner benefits and the other is harmed is termed

The normal microbiota provides protection against potentially harmful organisms and stimulates the immune system. Why would the immune responses to members of the normal microbiota cross-react with pathogens?

Colonization of the body is inhibited by

Humans and the Microbial World

The Molecules of Life

Microscopy and Cell Structure

Dynamics of Prokaryotic Growth

Control of Microbial Growth

Metabolism: Fueling Cell Growth

The Blueprint of Life, From Dna to Protein

Bacterial Genetics

Biotechnology and Recombinant Dna

Identification and Classification of Prokaryotes

The Diversity of Prokaryotic Organisms

The Eukaryotic Members of the Microbial World

Viruses, Viroids and Prions

The Innate Immune Response

The Adaptive Immune Response

Immunologic Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Genitourinary Infections

Nervous System Infections

Blood and Lymphatic Infections

Hiv Disease and Complications of Immunodeficiency

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

Filters