Question 1

The taxonomic approach to classifying disease is based on the

Accepted Answer

A)   means of transmission.
B)   type of host for the microbe.
C)   severity and duration of the disease.
D)   organs or organ systems affected by the disease.
E)   type of microbe that causes the disease. E

Question 2

Aerosols may be involved in transmission of pathogens.

Accepted Answer

A)   fecal- oral
B)   waterborne
C)   direct
D)   droplet
E)   vector

Question 3

Which of the following is considered a mechanical vector transmission?

Accepted Answer

A)   cockroach transmission of Shigella
B)   flea transmission of Yersinia
C)   louse transmission of Rickettsia
D)   tsetse fly transmission of Trypanosoma
E)   mosquito transmission of Plasmodium A

Question 4

Which of the following is NOT an example of symbiosis?

Accepted Answer

A)   protozoa in termites
B)   tuberculosis in the human lung
C)   tapeworm in the human intestine
D)   bacteria in the human colon
E)   microbes passing across the placenta to the fetus

Question 5

Which of the following is transmitted by the parenteral route?

Accepted Answer

A)   warts
B)   pertussis
C)   gonorrhea
D)   yellow fever
E)   ringworm

Question 6

A person is exposed to desert air containing fungus spores and develops valley fever as a result. Valley fever is an example of a disease.

Accepted Answer

A)   latent
B)   contagious
C)   chronic
D)   noncommunicable
E)   subacute

Question 7

Researchers have proposed that the herpesvirus responsible for the childhood illness roseola may cause a type of T cell leukemia. Ninety percent of the population has been infected by the virus by two years of age, but the T cell leukemia is relatively rare. The virus can be cultured in the laboratory in tissue culture, but not in mature organisms. Discuss the obstacles to applying Koch's postulates to the etiology of this disease.

Accepted Answer

Koch's first postulate, that the suspect agent must be present in every case of disease, is met, but far more people have the virus than have the disease. This suggests that more than the presence of the virus is necessary for the leukemia to develop, and the additional factors may be difficult to identify. The third postulate states that the isolated suspect agent must cause disease when introduced into a host. This situation presents two difficulties in satisfying the third postulate. The first is that it is unethical to deliberately expose humans to an agent that may produce life- threatening disease (the leukemia).
Additionally, ethical concerns aside, because such a large percentage of the population has been exposed to the virus, a large pool of potential uninfected subjects does not exist.

Question 8

A syndrome is a group of symptoms and signs that collectively characterize a particular disease.

Accepted Answer

A) True 
 B)False

Question 9

A nosocomial disease is a disease acquired

Accepted Answer

A)   by using a contaminated needle.
B)   by being bitten by an infected insect.
C)   in a health care facility.
D)   by having unprotected sexual intercourse.
E)   by eating contaminated food.

Question 10

The study of when and where diseases occur is known as (analytical/descriptive/experimental) epidemiology.

Accepted Answer

The answer of The study of when and where diseases...

Question 11

Normal microbiota may cause disease if they are introduced into an unusual site in the body.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following pairings of microbe and disease was disproven using Koch's postulates?

Accepted Answer

A)   hepatitis B and D and liver cancer
B)   Haemophilus influenzae and the flu
C)   HIV and AIDS
D)   varicella- zoster virus and chickenpox
E)   Mycobacterium leprae and leprosy

Question 13

Which of the following is considered part of the indigenous microbiota of the female reproductive system?

Accepted Answer

A)   E. coli
B)   Bacteroides
C)   Candida
D)   Lactobacillus
E)   both Candida and Lactobacillus

Question 14

The incidence of tuberculosis in the year 2000 in the United States was 12.43/100,000 cases. This means

Accepted Answer

A)   there were 12.43 tubercle bacilli per 100,000 microbes in the United States in the year 2000.
B)   12.43 of every 100,000 people died of tuberculosis in the U.S. in the year 2000.
C)   12.43 of every 100,000 cases of tuberculosis were treated in the United States in the year 2000.
D)   12.43 in every 100,000 people in the United States had tuberculosis in the year 2000.
E)   there were 12.43 new cases of tuberculosis for every 100,000 people in the United States in the year 2000.

Question 15

An infection always leads to disease.

Accepted Answer

A) True 
 B)False

Question 16

Microbes known as transient microbiota are

Accepted Answer

A)   organisms that remain in the body for a short time.
B)   unsuccessful microbial invaders because of the presence of preexisting microbes.
C)   microorganisms that remain with the person throughout life.
D)   microorganisms that may cause a disease under certain circumstances.
E)   sources of microbial contamination.

Question 17

Two children attend the same daycare, but one child is at daycare in the morning and the other child attends the daycare facility in the afternoon. Both children become ill with fifth disease within a day of each other. How might the pathogen have infected both children?

Accepted Answer

A)   vector transmission
B)   direct contact transmission
C)   fomite transmission
D)   droplet transmission
E)   vertical transmission

Question 18

The condition called parasitism is characterized as a(n)

Accepted Answer

A)   relationship between two organisms where only one member benefits and the other is unharmed.
B)   relationship between two organisms where one member harms the other.
C)   relationship between two organisms where both members benefit.
D)   nonsymbiotic relationship.
E)   unsuccessful microbial invasion due to the presence of preexisting microbes.

Question 19

Diseases that are induced by modern medical procedures are referred to as infections.

Accepted Answer

A)   subacute
B)   opportunistic
C)   exogenous
D)   iatrogenic
E)   endogenous

Question 20

Which of the following types of epidemiology applies Koch's postulates to study a disease?

Accepted Answer

A)   experimental
B)   retrospective
C)   descriptive
D)   analytical
E)   systemic

Exam 14: Infection, Infectious Disease, and Epidemiology

The taxonomic approach to classifying disease is based on the

Correct Answer
verified
E

Aerosols may be involved in transmission of pathogens.

Correct Answer
verified

Which of the following is considered a mechanical vector transmission?

Correct Answer
verified
A

Which of the following is NOT an example of symbiosis?

Correct Answer
verified

Which of the following is transmitted by the parenteral route?

Correct Answer
verified

A person is exposed to desert air containing fungus spores and develops valley fever as a result. Valley fever is an example of a disease.

Correct Answer
verified

A syndrome is a group of symptoms and signs that collectively characterize a particular disease.

Correct Answer
verified

A nosocomial disease is a disease acquired

Correct Answer
verified

The study of when and where diseases occur is known as (analytical/descriptive/experimental) epidemiology.

Correct Answer
verified

Normal microbiota may cause disease if they are introduced into an unusual site in the body.

Correct Answer
verified

Which of the following pairings of microbe and disease was disproven using Koch's postulates?

Correct Answer
verified

Which of the following is considered part of the indigenous microbiota of the female reproductive system?

Correct Answer
verified

The incidence of tuberculosis in the year 2000 in the United States was 12.43/100,000 cases. This means

Correct Answer
verified

An infection always leads to disease.

Correct Answer
verified

Microbes known as transient microbiota are

Correct Answer
verified

Two children attend the same daycare, but one child is at daycare in the morning and the other child attends the daycare facility in the afternoon. Both children become ill with fifth disease within a day of each other. How might the pathogen have infected both children?

Correct Answer
verified

The condition called parasitism is characterized as a(n)

Correct Answer
verified

Diseases that are induced by modern medical procedures are referred to as infections.

Correct Answer
verified

Which of the following types of epidemiology applies Koch's postulates to study a disease?

Correct Answer
verified

Exam 14: Infection, Infectious Disease, and Epidemiology

The taxonomic approach to classifying disease is based on the

Correct AnswerverifiedE

Aerosols may be involved in transmission of pathogens.

Correct AnswerverifiedShow Answer

Which of the following is considered a mechanical vector transmission?

Correct AnswerverifiedA

Which of the following is NOT an example of symbiosis?

Correct AnswerverifiedShow Answer

Which of the following is transmitted by the parenteral route?

Correct AnswerverifiedShow Answer

A person is exposed to desert air containing fungus spores and develops valley fever as a result. Valley fever is an example of a disease.

Correct AnswerverifiedShow Answer

A syndrome is a group of symptoms and signs that collectively characterize a particular disease.

Correct AnswerverifiedShow Answer

A nosocomial disease is a disease acquired

Correct AnswerverifiedShow Answer

The study of when and where diseases occur is known as (analytical/descriptive/experimental) epidemiology.

Correct AnswerverifiedShow Answer

Normal microbiota may cause disease if they are introduced into an unusual site in the body.

Correct AnswerverifiedShow Answer

Which of the following pairings of microbe and disease was disproven using Koch's postulates?

Correct AnswerverifiedShow Answer

Which of the following is considered part of the indigenous microbiota of the female reproductive system?

Correct AnswerverifiedShow Answer

The incidence of tuberculosis in the year 2000 in the United States was 12.43/100,000 cases. This means

Correct AnswerverifiedShow Answer

An infection always leads to disease.

Correct AnswerverifiedShow Answer

Microbes known as transient microbiota are

Correct AnswerverifiedShow Answer

Two children attend the same daycare, but one child is at daycare in the morning and the other child attends the daycare facility in the afternoon. Both children become ill with fifth disease within a day of each other. How might the pathogen have infected both children?

Correct AnswerverifiedShow Answer

The condition called parasitism is characterized as a(n)

Correct AnswerverifiedShow Answer

Diseases that are induced by modern medical procedures are referred to as infections.

Correct AnswerverifiedShow Answer

Which of the following types of epidemiology applies Koch's postulates to study a disease?

Correct AnswerverifiedShow Answer

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E

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A

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