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Microorganisms and Disease

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

prion
fungus
protozoan
virus

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Microorganisms and Disease
Mucus helps in protecting against pathogens by

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

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Microorganisms and Disease
Pseudomembraneous colitis is

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

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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?

Rheumatic disease
Malaria
Typhoid
Chicken pox

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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
ciliated epithelial cells
M cells
B cells

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

Diphtheria
Botulism
Tuberculosis
Shigella dysentery

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