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 can live inside macrophages
The pathogen contains mycolic acid in its cell wall
None of these

ANSWER DOWNLOAD EXAMIANS APP

Microorganisms and Disease
The influenza vaccine is administered each year because

it is a polysaccharide vaccine that does not confer long-term protection
the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
None of these

ANSWER DOWNLOAD EXAMIANS APP

Microorganisms and Disease
Plastic implants can pose a serious nosocomial infection problem because

All of these
infected implants usually have to be surgically removed
phagocytes have trouble engulfing bacteria embedded in a biofilm
phagocytes have trouble moving on the plastic surface

ANSWER DOWNLOAD EXAMIANS APP

Microorganisms and Disease
Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?

Both organisms are gram-positive spore formers
Both organisms cause skin and respiratory tract infections
The most serious disease symptoms are the direct result of toxin action
Diphtheria toxin and edema toxin are ADP ribosylating toxins

ANSWER DOWNLOAD EXAMIANS APP