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Microorganisms and Disease

Microorganisms and Disease
An important host defense of human beings is a dense resident microbiota associated with

vagina
lungs
uterus
bladder

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Microorganisms and Disease
Each of the 3 virulence factors of Bacillus anthracis i.e. the capsule, edema toxin and lethal toxin can affect the activity of

macrophages
B cells
M cells
ciliated epithelial cells

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Microorganisms and Disease
Which of the following statements is not true regarding Mycobacterium tuberculosis and/or the disease it causes?

Antibodies to the pathogen are protective
The pathogen contains mycolic acid in its cell wall
None of these
The pathogen can live inside macrophages

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Microorganisms and Disease
Pseudomembraneous colitis is

All of these
caused by a gram-positive bacterium
caused by a spore-forming bacterium
precipitated by the use of certain antibiotics

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Microorganisms and Disease
The agent responsible for causing mad cow disease is thought to be a

fungus
prion
virus
protozoan

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Microorganisms and Disease
Both Mycobacterium tuberculosis and Streptococcus pneumoniae

stay in the lung and rarely, if ever, enter the bloodstream
have cell walls that contain a high content of mycolic acids
are acquired by inhalation
have polysaccharide capsules

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