Microorganisms and Disease Which is not a major defense mechanism in the stomach? Low pH Proteolytic enzymes Dense normal flora All of these Low pH Proteolytic enzymes Dense normal flora All of these 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 mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines None of these 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 it is a polysaccharide vaccine that does not confer long-term protection ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Mucus helps in protecting against pathogens by lowering the pH facilitating the growth of normal flora blocking access and attachment of pathogens to mucosal surfaces sequestering Iron lowering the pH facilitating the growth of normal flora blocking access and attachment of pathogens to mucosal surfaces sequestering Iron ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine? The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings A limited number of capsule types The possession of a segmented RNA genome The ability of the Rotavirus to be transmitted faster The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings A limited number of capsule types The possession of a segmented RNA genome The ability of the Rotavirus to be transmitted faster ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following is true regarding anthrax? Inhalation Anthrax requires infection with a large number of spores Anthrax is highly contagious Anthrax is caused by a virus Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis Inhalation Anthrax requires infection with a large number of spores Anthrax is highly contagious Anthrax is caused by a virus Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause ADP ribosylation of adenylate cyclase that stops production of cAMP ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP ADP ribosylation of guanylate cyclase that stimulates production of cGMP cleavage of rRNA that results in disruption of ribosome function ADP ribosylation of adenylate cyclase that stops production of cAMP ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP ADP ribosylation of guanylate cyclase that stimulates production of cGMP cleavage of rRNA that results in disruption of ribosome function ANSWER DOWNLOAD EXAMIANS APP
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