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Microorganisms and Disease

Microorganisms and Disease
Which of these cytokines is also known under the name cachectin?

None of these
Tumor necrosis factor (TNF)
Interleukin 2
Interferon gamma

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Microorganisms and Disease
Both Mycobacterium tuberculosis and Streptococcus pneumoniae

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

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Microorganisms and Disease
Which is not a major defense mechanism in the stomach?

All of these
Low pH
Dense normal flora
Proteolytic enzymes

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Microorganisms and Disease
Mucus helps in protecting against pathogens by

facilitating the growth of normal flora
sequestering Iron
lowering the pH
blocking access and attachment of pathogens to mucosal surfaces

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Microorganisms and Disease
Coxsackie virus B3, a subgroup of enteroviruses, commonly causes

myocarditis
muscular dystrophy
acute hemorrhagic conjunctivitis
gastroenteritis

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Microorganisms and Disease
Pseudomembraneous colitis is

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

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