Question 1

Which of the following statements is FALSE?

Accepted Answer

A)  S. aureus is differentiated from other mannitol+ cocci by the coagulase test. 
B)  The M in MRSA stands for mannitol. 
C)  Antimicrobial therapy for hemodialysis-associated infections increases antibiotic resistance. 
D)  The USA300 strain accounts for most community-acquired MRSA. 
E)  The USA100 strain accounts for most hospital-acquired MRSA. 
A)  S. aureus is differentiated from other mannitol+ cocci by the coagulase test. 
B)  The M in MRSA stands for mannitol. 
C)  Antimicrobial therapy for hemodialysis-associated infections increases antibiotic resistance. 
D)  The USA300 strain accounts for most community-acquired MRSA. 
E)  The USA100 strain accounts for most hospital-acquired MRSA.

Question 2

Which of the following statements about biological transmission is FALSE?

Accepted Answer

A)  The pathogen may enter the host in the vectorʹs feces. 
B)  Houseflies are an important vector. 
C)  The pathogen may be injected by the bite of the vector. 
D)  The pathogen may require the vector as a host. 
E)  The pathogen reproduces in the vector. 
A)  The pathogen may enter the host in the vectorʹs feces. 
B)  Houseflies are an important vector. 
C)  The pathogen may be injected by the bite of the vector. 
D)  The pathogen may require the vector as a host. 
E)  The pathogen reproduces in the vector.

Question 3

The yeast Candida albicans does not normally cause disease because of

Accepted Answer

A)  antagonistic bacteria. 
B)  other fungi. 
C)  commensal bacteria. 
D)  symbiotic bacteria. 
E)  parasitic bacteria. 
A)  antagonistic bacteria. 
B)  other fungi. 
C)  commensal bacteria. 
D)  symbiotic bacteria. 
E)  parasitic bacteria.

Question 4

Which of the following statements is TRUE?

Accepted Answer

A)  At least one member must benefit in a symbiotic relationship. 
B)  Members of a symbiotic relationship cannot live without each other. 
C)  Symbiosis always refers to different organisms living together and benefiting from each other. 
D)  A parasite is not in symbiosis with its host. 
E)  Both members are harmed in a symbiotic relationship. 
A)  At least one member must benefit in a symbiotic relationship. 
B)  Members of a symbiotic relationship cannot live without each other. 
C)  Symbiosis always refers to different organisms living together and benefiting from each other. 
D)  A parasite is not in symbiosis with its host. 
E)  Both members are harmed in a symbiotic relationship.

Question 5

A needlestick is an example of

Accepted Answer

A)  indirect contact transmission by fomite. 
B)  direct contact. 
C)  droplet transmission. 
D)  direct biological transmission by vector. 
E)  vehicle transmission. 
A)  indirect contact transmission by fomite. 
B)  direct contact. 
C)  droplet transmission. 
D)  direct biological transmission by vector. 
E)  vehicle transmission.

Question 6

A researcher has performed a prospective study on a disease. To which specific kind of epidemiological study is this referring?

Accepted Answer

A)  analytical 
B)  prodromal 
C)  case control 
D)  experimental 
E)  descriptive 
A)  analytical 
B)  prodromal 
C)  case control 
D)  experimental 
E)  descriptive

Question 7

Which of the following is NOT an example of microbial antagonism?

Accepted Answer

A)  acid production by bacteria 
B)  bacteria causing disease 
C)  bacteriocin production 
D)  bacteria occupying host receptors 
E)  bacteria producing vitamin K 
A)  acid production by bacteria 
B)  bacteria causing disease 
C)  bacteriocin production 
D)  bacteria occupying host receptors 
E)  bacteria producing vitamin K

Question 8

Would you expect all EIDs to be on the notifiable infectious disease list? Explain.

Accepted Answer

No, not all Emerging Infectious Diseases

Question 9

Dengue fever, a zoonotic disease, is endemic in northern Mexico, but not in the U.S. Provide two plausible explanations for this dichotomy, and explain.

Accepted Answer

There are two plausible explanations for

Question 10

Diseases that are referred to as emerging infectious diseases have only been discovered in the past fifty years.

Accepted Answer

A) True 
 B)False

Question 11

Both normal and transient flora can become opportunistic pathogens.

Accepted Answer

A) True 
 B)False

Question 12

Koch observed Bacillus anthracis multiplying in the blood of cattle. What is this condition called?

Accepted Answer

A)  bacteremia 
B)  systemic infection 
C)  focal infection 
D)  local infection 
E)  septicemia 
A)  bacteremia 
B)  systemic infection 
C)  focal infection 
D)  local infection 
E)  septicemia

Question 13

Which of the following is a fomite?

Accepted Answer

A)  a hypodermic needle 
B)  insects 
C)  water 
D)  pus 
E)  droplets from a sneeze 
A)  a hypodermic needle 
B)  insects 
C)  water 
D)  pus 
E)  droplets from a sneeze

Question 14

For a particular disease at a specific time period, morbidity rates should always be equal or greater than mortality rates.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following pairs is mismatched?

Accepted Answer

A)  influenza  droplet infection 
B)  syphilis  direct contact 
C)  salmonellosis  vehicle transmission 
D)  malaria  vector 
E)  None of the pairs is mismatched. 
A)  influenza  droplet infection 
B)  syphilis  direct contact 
C)  salmonellosis  vehicle transmission 
D)  malaria  vector 
E)  None of the pairs is mismatched.

Question 16

The science that deals with when diseases occur and how they are transmitted is called

Accepted Answer

A)  public health. 
B)  morbidity and mortality. 
C)  epidemiology. 
D)  communicable disease. 
E)  ecology. 
A)  public health. 
B)  morbidity and mortality. 
C)  epidemiology. 
D)  communicable disease. 
E)  ecology.

Question 17

Urinary tract infections are the most common forms of nosocomial infections.

Accepted Answer

A) True 
 B)False

Question 18

Figure 14.3   The graph in Figure 14.3 shows the incidence of polio in the United States. The period between 1945 and 1955 indicates a(n)

Accepted Answer

A)  epidemic level. 
B)  communicable disease. 
C)  sporadic infection. 
D)  endemic level. 
E)  pandemic. 
A)  epidemic level. 
B)  communicable disease. 
C)  sporadic infection. 
D)  endemic level. 
E)  pandemic.

Question 19

Which one of the following is NOT a zoonosis?

Accepted Answer

A)  Hantavirus pulmonary syndrome 
B)  tapeworm 
C)  rabies 
D)  cat-scratch disease 
E)  All of these are zoonoses. 
A)  Hantavirus pulmonary syndrome 
B)  tapeworm 
C)  rabies 
D)  cat-scratch disease 
E)  All of these are zoonoses.

Question 20

The etiologic agent of the disease in Situation 14.1 is

Accepted Answer

A)  sheep. 
B)  pneumonia. 
C)  Coxiella burnetii. 
D)  soil. 
E)  wind. 
A)  sheep. 
B)  pneumonia. 
C)  Coxiella burnetii. 
D)  soil. 
E)  wind.

Exam 14: Principles of Disease and Epidemiology

Which of the following statements is FALSE?

Which of the following statements about biological transmission is FALSE?

The yeast Candida albicans does not normally cause disease because of

Which of the following statements is TRUE?

A needlestick is an example of

A researcher has performed a prospective study on a disease. To which specific kind of epidemiological study is this referring?

Which of the following is NOT an example of microbial antagonism?

Would you expect all EIDs to be on the notifiable infectious disease list? Explain.

Dengue fever, a zoonotic disease, is endemic in northern Mexico, but not in the U.S. Provide two plausible explanations for this dichotomy, and explain.

Diseases that are referred to as emerging infectious diseases have only been discovered in the past fifty years.

Both normal and transient flora can become opportunistic pathogens.

Koch observed Bacillus anthracis multiplying in the blood of cattle. What is this condition called?

Which of the following is a fomite?

For a particular disease at a specific time period, morbidity rates should always be equal or greater than mortality rates.

Which of the following pairs is mismatched?

The science that deals with when diseases occur and how they are transmitted is called

Urinary tract infections are the most common forms of nosocomial infections.

Figure 14.3 The graph in Figure 14.3 shows the incidence of polio in the United States. The period between 1945 and 1955 indicates a(n)

Which one of the following is NOT a zoonosis?

The etiologic agent of the disease in Situation 14.1 is

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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