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Microorganisms and Disease

Microorganisms and Disease
Immunization with which of the following toxoid induces high titer serum antibody, but does not protect from the corresponding disease?

Botulism
Shigellosis
Diphtheria
Tetanus

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Microorganisms and Disease
Which of the following disease is not caused by microbial protein toxin?

Diphtheria
Shigella dysentery
Botulism
Tuberculosis

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

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

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

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

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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 polysaccharide capsules
have cell walls that contain a high content of mycolic acids
are acquired by inhalation

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Microorganisms and Disease
Mucus helps in protecting against pathogens by

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

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