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Microorganisms and Disease

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

virus
protozoan
prion
fungus

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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
The pathogen contains mycolic acid in its cell wall
The pathogen can live inside macrophages
Antibodies to the pathogen are protective

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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
have polysaccharide capsules
stay in the lung and rarely, if ever, enter the bloodstream

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Microorganisms and Disease
Which of the following disease is caused by DNA viruses?

Poliomyelitis
Small pox
Yellow fever
Measles

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Microorganisms and Disease
The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is

formalin-inactivated viruses
small dosage of wild-type live viruses
live attenuated strains of all three immunological types
heat killed virus

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

Low pH
All of these
Dense normal flora
Proteolytic enzymes

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