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Microorganisms and Disease

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

prion
protozoan
fungus
virus

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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
The pathogen can live inside macrophages
None of these

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Microorganisms and Disease
Pseudomembraneous colitis is

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

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

Shigellosis
Diphtheria
Botulism
Tetanus

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Microorganisms and Disease
All infections do not cause fever and all fevers are not due to infections which of the following is an example of non-infections cause of fever?

Typhoid
Rheumatic disease
Malaria
Chicken pox

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Microorganisms and Disease
Mucus helps in protecting against pathogens by

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

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