Question 1

The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the

Accepted Answer

A)   prodromal stage.
B)   convalescent stage.
C)   incubation period.
D)   period of invasion.
E)   All of these choices are correct.F) A) and E)
G) A) and C)

Question 2

Discuss 5 specific contributing factors in the occurrence of health-care-associated infections, and then discuss 3 actions that can help decrease their rate at health care facilities.

Accepted Answer

Health-care-associated infections (HAIs)...

Question 3

Experiments have been done to determine the infective dose of a specific pathogen in animals with normal microbiota and gnotobiotic animals. Predict how the infective dose for gnotobiotic animals is expected to compare to the infective dose of animals with normal microbiota.

Accepted Answer

A)   The infective dose would be the same for both groups of animals.
B)   The infective dose would be lower for the gnotobiotic animals.
C)   The infective does would be higher for the gnotobiotic animals.D) B) and C)
E) A) and C)

Question 4

Which genus is the most common resident flora of mouth surfaces?

Accepted Answer

A)   Lactobacillus
B)   Streptococcus
C)   Haemophilus
D)   Escherichia
E)   MycobacteriumF) A) and C)
G) C) and D)

Question 5

Which portal of entry is the most commonly used by pathogens?

Accepted Answer

A)   urogenital
B)   gastrointestinal
C)   respiratory
D)   skin
E)   They are all equally used as portals.F) B) and C)
G) A) and E)

Question 6

Endogenous infectious agents arise from microbes that are

Accepted Answer

A)   in food.
B)   the patient's own normal flora.
C)   on fomites.
D)   in the air.
E)   transmitted from one person to another.F) C) and D)
G) A) and E)

Question 7

When would Koch's Postulates be utilized?

Accepted Answer

A)   to determine the cause of a patient's illness in a hospital microbiology lab
B)   to develop a new antibiotic in a pharmaceutical lab
C)   to determine the cause of a new disease in a microbiology research lab
D)   to formulate a vaccine against a new pathogen in a genetic engineering lab
E)   whenever the scientific method is used to investigate a microbiological problemF) A) and E)
G) All of the above

Question 8

A disease that has a steady frequency over time in a population is

Accepted Answer

A)   epidemic.
B)   endemic.
C)   pandemic.
D)   sporadic.
E)   chronic.F) A) and B)
G) A) and E)

Question 9

The collection of genetic material from all of the normal microbiota that reside on the human body is known as the

Accepted Answer

A)   human biome.
B)   human microbiome.
C)   human microcommunity.
D)   human genome.E) B) and C)
F) C) and D)

Question 10

Microbial hyaluronidase, coagulase, and streptokinase are examples of

Accepted Answer

A)   adhesive factors.
B)   exotoxins.
C)   hemolysins.
D)   antiphagocytic factors.
E)   exoenzymes.F) A) and C)
G) A) and B)

Question 11

A _____ is an infection indigenous to animals that can, on occasion, be transmitted to humans.

Accepted Answer

The answer of A _____ is an infection indigenous to...

Question 12

A person with which occupation is most at risk for a zoonotic disease?

Accepted Answer

A)   accountant
B)   teacher
C)   nurse
D)   dental hygienist
E)   forest rangerF) B) and D)
G) A) and E)

Question 13

Leukopenia is the _____ in the level of white blood cells in a patient.

Accepted Answer

The answer of Leukopenia is the _____ in the level...

Question 14

Enterotoxins are

Accepted Answer

A)   virulence factors.
B)   toxins that target the intestines.
C)   proteins.
D)   exotoxins.
E)   All of these choices are correct.F) A) and C)
G) A) and E)

Question 15

_____ carriers are shedding and transmitting pathogens while they are recovering from an infectious disease.

Accepted Answer

The answer of _____ carriers are shedding and transmitting pathogens...

Question 16

STORCH is an acronym that represents the most common

Accepted Answer

A)   genera of resident flora.
B)   sexually-transmitted diseases.
C)   portals of entry.
D)   vectors.
E)   infections of the fetus and neonate.F) D) and E)
G) B) and D)

Question 17

Which of the following is an example of vertical transmission?

Accepted Answer

A)   drinking contaminated water
B)   a sneeze transmitting a cold
C)   oral-fecal transmission involving a diaper
D)   a mosquito bite
E)   a mother transmitting syphilis to her fetusF) A) and D)
G) C) and E)

Question 18

All of the following are signs of infectious diseases, except

Accepted Answer

A)   fever.
B)   leucopenia.
C)   swollen lymph nodes.
D)   antibodies in serum.
E)   nausea.F) D) and E)
G) B) and E)

Question 19

All infectious diseases

Accepted Answer

A)   are contagious.
B)   only occur in humans.
C)   are caused by microorganisms or their products.
D)   are caused by vectors.
E)   involve viruses as the pathogen.F) A) and B)
G) A) and C)

Question 20

Infection occurs when

Accepted Answer

A)   contaminants are present on the skin.
B)   a person swallows microbes in/on food.
C)   a person inhales microbes in the air.
D)   pathogens enter and multiply in body tissues.
E)   All of these choices are correct.F) B) and E)
G) None of the above

Exam 13: Microbe-Human Interactions: Infection and Disease

Endogenous infectious agents arise from microbes that are

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All of the following are signs of infectious diseases, except

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Which of the following is an example of vertical transmission?

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_____ carriers are shedding and transmitting pathogens while they are recovering from an infectious disease.

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Which genus is the most common resident flora of mouth surfaces?

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The collection of genetic material from all of the normal microbiota that reside on the human body is known as the

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Which portal of entry is the most commonly used by pathogens?

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STORCH is an acronym that represents the most common

Correct AnswerverifiedShow Answer

Microbial hyaluronidase, coagulase, and streptokinase are examples of

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A _____ is an infection indigenous to animals that can, on occasion, be transmitted to humans.

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A person with which occupation is most at risk for a zoonotic disease?

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All infectious diseases

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The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the

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A disease that has a steady frequency over time in a population is

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Enterotoxins are

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Experiments have been done to determine the infective dose of a specific pathogen in animals with normal microbiota and gnotobiotic animals. Predict how the infective dose for gnotobiotic animals is expected to compare to the infective dose of animals with normal microbiota.

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Infection occurs when

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Discuss 5 specific contributing factors in the occurrence of health-care-associated infections, and then discuss 3 actions that can help decrease their rate at health care facilities.

Correct AnswerAnswered by ExamLex AIHealth-care-associated infections (HAIs)...View AnswerShow Answer

When would Koch's Postulates be utilized?

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Leukopenia is the _____ in the level of white blood cells in a patient.

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Health-care-associated infections (HAIs)...
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