MICR 290 EXAM 9 QUESTIONS WITH 100%
CORRECT ANSWERS!!
Which of the following is NOT typically part of the normal microbiota of the skin?
a. Gram-positive aerobic cocci
b. diphtheroid bacteria
c. enterococci
d. yeast
c. enterococci
The key term of the question is referring to organisms of the skin. Which of the listed answer
choices doesn't fit this environment?
T or F
MRSA refers to a form of Staphylococcus aureus that is resistant to methicillin.
True
T or F
Rickettsia rickettsii are obliged to live inside other cells due to their special nutritional
requirements.
True
Which of the following is NOT a bacterial infection of the skin?
a. folliculitis
b. cat scratch disease
c. necrotizing fasciitis
d. athlete's foot
,The key term of this question is bacterial. Which of the answer choices is not a bacterial
pathogen?
Bartonella henselae causes which of the following?
a. Rocky Mountain spotted fever
b. chickenpox
c. gas gangrene
d. cat scratch disease
d. cat scratch disease
This microbe causes disease only in humans, although it is carried by an animal. Recall that this
organism also grows inside the red blood cells of infected individuals.
Chickenpox in adults is more severe than in children because __________.
a. VZV is more likely to become latent in children
b. adults are usually infected by more virulent strains of VZV
c. adults have a more developed immune system
d. VZV can spread to the brain and spinal cord in adults
c. adults have a more developed immune system
Which of the following does NOT play a role in the pathogenicity of Clostridium
perfringens?
a. endospore formation
b. rapid cell division
c. non-motility
d. toxin production
c. non-motility
The pathogenicity depends on virulence factors that allow C. perfringens to better infect its host.
,Teratogenic birth defects are common in the babies of pregnant women infected with
which of the following diseases?
a. roseola
b. chickenpox
c. rubella
d. measles
c. rubella
Teratogenic birth defects are defects such as deafness, mental retardation, microcephaly, and
other serious problems in unborn children
Which of the following molecules enables Staphylococcus aureus to evade phagocytosis?
a. protein A
b. beta-lactamase
c. enterotoxins
d. hyaluronidase
a. protein A
This molecule is found on the surface of the cell and interferes with opsonization.
T or F
A cutaneous mycose is a superficial fungal infection.
False
Cutaneous means relating to or affecting the skin
Inflammation of the middle ear, called , is ___________ a common infection associated with
Streptococcus pneumoniae in young children.
, otitis media
This is a common infection in young children but is less common in adults because of changes in
the anatomy of the head.
T or F
The Sabin polio vaccine is a live-virus vaccine.
True
The OPV (oral polio vaccine) has been known to actually cause polio because it is a live,
attenuated virus vaccine.
T or F
Both botulism and tetanus involve disruption of communication at neuromuscular
junctions.
True
Botulism interferes with this communication to produce a flaccid paralysis; tetanus interferes
with the communication in such a way as to produce a rigid paralysis.
T or F
Trachoma strains of Chlamydia trachomatis cause blindness because the organism
reproduces in the cells of the cornea.
False
T or F
Pathogens of the nervous system usually have one or more virulence factors designed to
overcome the normal microbiota of the CNS.
CORRECT ANSWERS!!
Which of the following is NOT typically part of the normal microbiota of the skin?
a. Gram-positive aerobic cocci
b. diphtheroid bacteria
c. enterococci
d. yeast
c. enterococci
The key term of the question is referring to organisms of the skin. Which of the listed answer
choices doesn't fit this environment?
T or F
MRSA refers to a form of Staphylococcus aureus that is resistant to methicillin.
True
T or F
Rickettsia rickettsii are obliged to live inside other cells due to their special nutritional
requirements.
True
Which of the following is NOT a bacterial infection of the skin?
a. folliculitis
b. cat scratch disease
c. necrotizing fasciitis
d. athlete's foot
,The key term of this question is bacterial. Which of the answer choices is not a bacterial
pathogen?
Bartonella henselae causes which of the following?
a. Rocky Mountain spotted fever
b. chickenpox
c. gas gangrene
d. cat scratch disease
d. cat scratch disease
This microbe causes disease only in humans, although it is carried by an animal. Recall that this
organism also grows inside the red blood cells of infected individuals.
Chickenpox in adults is more severe than in children because __________.
a. VZV is more likely to become latent in children
b. adults are usually infected by more virulent strains of VZV
c. adults have a more developed immune system
d. VZV can spread to the brain and spinal cord in adults
c. adults have a more developed immune system
Which of the following does NOT play a role in the pathogenicity of Clostridium
perfringens?
a. endospore formation
b. rapid cell division
c. non-motility
d. toxin production
c. non-motility
The pathogenicity depends on virulence factors that allow C. perfringens to better infect its host.
,Teratogenic birth defects are common in the babies of pregnant women infected with
which of the following diseases?
a. roseola
b. chickenpox
c. rubella
d. measles
c. rubella
Teratogenic birth defects are defects such as deafness, mental retardation, microcephaly, and
other serious problems in unborn children
Which of the following molecules enables Staphylococcus aureus to evade phagocytosis?
a. protein A
b. beta-lactamase
c. enterotoxins
d. hyaluronidase
a. protein A
This molecule is found on the surface of the cell and interferes with opsonization.
T or F
A cutaneous mycose is a superficial fungal infection.
False
Cutaneous means relating to or affecting the skin
Inflammation of the middle ear, called , is ___________ a common infection associated with
Streptococcus pneumoniae in young children.
, otitis media
This is a common infection in young children but is less common in adults because of changes in
the anatomy of the head.
T or F
The Sabin polio vaccine is a live-virus vaccine.
True
The OPV (oral polio vaccine) has been known to actually cause polio because it is a live,
attenuated virus vaccine.
T or F
Both botulism and tetanus involve disruption of communication at neuromuscular
junctions.
True
Botulism interferes with this communication to produce a flaccid paralysis; tetanus interferes
with the communication in such a way as to produce a rigid paralysis.
T or F
Trachoma strains of Chlamydia trachomatis cause blindness because the organism
reproduces in the cells of the cornea.
False
T or F
Pathogens of the nervous system usually have one or more virulence factors designed to
overcome the normal microbiota of the CNS.
