Microorganisms and Disease Pseudomembraneous colitis is All of these precipitated by the use of certain antibiotics caused by a spore-forming bacterium caused by a gram-positive bacterium All of these precipitated by the use of certain antibiotics caused by a spore-forming bacterium caused by a gram-positive bacterium ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease A major difference between EHEC and EPEC is EHEC secretes a Shiga-like toxin and EPEC does not EPEC rearranges host cell actin and EHEC does not EHEC possesses a type III secretion system and EPEC does not EPEC passes through the placenta to infect the fetus and EHEC does not EHEC secretes a Shiga-like toxin and EPEC does not EPEC rearranges host cell actin and EHEC does not EHEC possesses a type III secretion system and EPEC does not EPEC passes through the placenta to infect the fetus and EHEC does not ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which is not a major defense mechanism in the stomach? Dense normal flora Proteolytic enzymes Low pH All of these Dense normal flora Proteolytic enzymes Low pH All of these ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease 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 activate T cells to proliferate and secrete cytokines secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine survive the acid pH of the stomach survive within macrophages activate T cells to proliferate and secrete cytokines secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine survive the acid pH of the stomach survive within macrophages ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Lactoferrin helps to protect against pathogens by lowering the pH sequestering Iron blocking sebum production facilitating the growth of normal flora lowering the pH sequestering Iron blocking sebum production facilitating the growth of normal flora ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease The influenza vaccine is administered each year because the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time it is a polysaccharide vaccine that does not confer long-term protection mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines None of these the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time it is a polysaccharide vaccine that does not confer long-term protection 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
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