Module 9 Flashcards
The upper respiratory tract
is a sterile environment and contains no microorganisms or normal microbiota.
is very rarely the site of infection by inhaled microorganisms.
includes the lungs and alveoli.
defends the lower respiratory tract by filtration, trapping particulate matter in the air and sweeping it upward.
defends the lower respiratory tract by filtration, trapping particulate matter in the air and sweeping it upward.
Which of the following does not describe rhinoviruses?
they can cause head colds.
they take their name from the Greek rhinos meaning nose
they belong to the Picornaviridae family of viruses.
they are DNA viruses with helical symmetry.
they are DNA viruses with helical symmetry.
Developing a vaccine for the common cold is difficult because
viruses cannot be cultivated in tissue culture medium.
funds for this type of research are not available.
there would be virtually no candidates for such a vaccine
many different viruses can cause the common cold.
many different viruses can cause the common cold.
Corynebacterium diphtheriae produces an exotoxin that
interrupts protein synthesis in epithelial cells.
interferes with membrane transport in human cells only.
destroys Krebs cycle enzymes in tissues.
interferes with ATP production in infected tissues.
interrupts protein synthesis in epithelial cells.
Repeated bouts of violent, high-pitched coughing in child is a common sign of a disease caused by:
Bordetella pertussis.
Streptococcus pneumoniae.
Haemophilus influenzae.
Mycobacterium tuberculosis.
Bordetella pertussis.
Mycobacterium tuberculosis is different than most bacteria because it
must be lysogenized before it can cause disease.
contains mycolic acid in the cell wall.
forms a capsule.
has a flexible cell wall.
contains mycolic acid in the cell wall.
Penicillin is not normally used to treat primary atypical pneumonia because the pathogens responsible
have no cell wall.
develop resistance rapidly.
are gram-negative.
grow only within the cells.
have no cell wall.
Legionnaires’ disease patients have been shown to be infected with bacteria that
appear as staphylococci.
cannot be cultivated in the laboratory.
are present in the urine.
can accumulate in standing water.
can accumulate in standing water.
Which of the following methods is NOT a common way to acquire anthrax?
inhalation of airborne spores.
contact with infected animals.
consumption of food from vacuum sealed jars.
consumption of contaminated meat.
consumption of food from vacuum sealed jars.
All of the following are false regarding influenza virus EXCEPT
The virion has no envelope
The virion has no protein associated with it
The virion undergoes antigenic variations
Transmission usually occurs by water contamination
The virion undergoes antigenic variations
Symptoms for this hemorrhagic fever are fever, headache, joint and muscle aches, sore throat, and weakness. This followed by diarrhea, vomiting, and stomach pain. A rash, red eyes, hiccups and internal and external bleeding may be seen in some patients. What is this disease?
Yellow fever
Lassa fever
Ebola
Dengue fever
Ebola
The flea is necessary to transmit
epidemic typhus but not endemic typhus.
bubonic plague but not pneumonic plague.
anthrax but not tularemia.
Lyme disease but not epidemic typhus.
bubonic plague but not pneumonic plague.
All of the following are caused by endospore-forming bacteria EXCEPT
Bubonic plague
Anthrax
Gas gangrene
Tetanus
Bubonic plague
Which of the following diseases is transmitted through respiratory droplets?
gas gangrene.
tetanus.
pneumonic plague.
tularemia.
pneumonic plague.
Which of the following does NOT describe Lyme disease
the disease was unknown before the 1970s.
the disease is named for a town in Connecticut.
the causative organism is Borrelia burgdorferi.
transmission is by the Xenopsylla flea.
transmission is by the Xenopsylla flea.
