HW: clostridium & mycobacterium Flashcards
Which condition promotes germination of Clostridium tetani endospores during a tetanus infection?
anoxia
Clostridium difficile infections most often occur
following antibiotic treatment
A cow is suffering from chronic watery diarrhea. It also exhibits symptoms such as emaciation and dry skin and hair coat. A delayed hypersensitivity intra-dermal test with Johnin purified protein was positive. The disease in cow is caused by
mycobacterium paratuberculosis
Clostridium botulinum is a gram-________ rod that produces an ________.
positive-endospore forming/ exotoxin
In the case of ________, ONLY the neurotoxin is required to cause food poisoning. So, antibiotics will NOT help cure the disease, and destroying the cells in food processing will NOT prevent disease if the neurotoxin is already formed.
botulism
Which of the following is TRUE of tuberculosis?
the causative agent can remain dormant in macrophages
what is the natural reservoir of clostridium tetani
soil
During sporulation, Clostridium perfringens produces ________, which typically cause food poisoning symptoms ________ after consumption of contaminated food.
enterotoxins 7-15 hrs
Tetanus develops from a puncture wound because
the organism’s endospores germinate in anoxic conditions
Destroyed tissue throughout the lungs and the presence of acid-fast bacteria in a sputum sample likely indicate infection by
mycobacterium tuberculosis
Death from tetanus is usually due to
respiratory failure
Hyperbaric oxygen can be used to treat
gas gangrene
Select the false statement regarding Mycobacterium spp.
M. leprae is usually easy to grow in artificial media
Transmission of Mycobacterium leprae involves
both direct contact and the respiratory route
Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals.
coughing near
