MICROORGANISMS AND DISEASE QUIZ

Type III secretion systems are used to inject "effector" proteins directly into a host cell. Salmonella uses a type III secretion system to help the pathogen to

secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine

survive within macrophages

activate T cells to proliferate and secrete cytokines

survive the acid pH of the stomach

TRUE ANSWER : ?
YOUR ANSWER : ?

Mucus helps in protecting against pathogens by

blocking access and attachment of pathogens to mucosal surfaces

sequestering Iron

lowering the pH

facilitating the growth of normal flora

TRUE ANSWER : ?
YOUR ANSWER : ?

Lactoferrin helps to protect against pathogens by

lowering the pH

blocking sebum production

facilitating the growth of normal flora

sequestering Iron

TRUE ANSWER : ?
YOUR ANSWER : ?

Fatalities following influenza infection are usually due to the

dehydration

formation of granulomas in the lung

damage to the heart muscle

bacterial superinfection

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

The pathogen can live inside macrophages

The pathogen contains mycolic acid in its cell wall

Antibodies to the pathogen are protective

TRUE ANSWER : ?
YOUR ANSWER : ?

Coxsackie virus B3, a subgroup of enteroviruses, commonly causes

acute hemorrhagic conjunctivitis

myocarditis

muscular dystrophy

gastroenteritis

TRUE ANSWER : ?
YOUR ANSWER : ?

Plastic implants can pose a serious nosocomial infection problem because

infected implants usually have to be surgically removed

All of these

phagocytes have trouble engulfing bacteria embedded in a biofilm

phagocytes have trouble moving on the plastic surface

TRUE ANSWER : ?
YOUR ANSWER : ?

Pseudomembraneous colitis is

caused by a spore-forming bacterium

caused by a gram-positive bacterium

precipitated by the use of certain antibiotics

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

Chicken pox

Rheumatic disease

Typhoid

Malaria

TRUE ANSWER : ?
YOUR ANSWER : ?

Both Mycobacterium tuberculosis and Streptococcus pneumoniae

stay in the lung and rarely, if ever, enter the bloodstream

are acquired by inhalation

have polysaccharide capsules

have cell walls that contain a high content of mycolic acids

TRUE ANSWER : ?
YOUR ANSWER : ?

↑