Microorganisms and Disease Which is not a major defense mechanism in the stomach? Dense normal flora Proteolytic enzymes All of these Low pH Dense normal flora Proteolytic enzymes All of these Low pH ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Both Mycobacterium tuberculosis and Streptococcus pneumoniae have polysaccharide capsules have cell walls that contain a high content of mycolic acids 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 stay in the lung and rarely, if ever, enter the bloodstream are acquired by inhalation 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 guanylate cyclase that stimulates production of cGMP cleavage of rRNA that results in disruption of ribosome function ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP ADP ribosylation of adenylate cyclase that stops production of cAMP ADP ribosylation of guanylate cyclase that stimulates production of cGMP cleavage of rRNA that results in disruption of ribosome function ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP ANSWER DOWNLOAD EXAMIANS APP
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 ciliated epithelial cells M cells macrophages B cells ciliated epithelial cells M cells macrophages B cells ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine? A limited number of capsule types The possession of a segmented RNA genome The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings The ability of the Rotavirus to be transmitted faster A limited number of capsule types The possession of a segmented RNA genome The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings The ability of the Rotavirus to be transmitted faster ANSWER DOWNLOAD EXAMIANS APP
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 None of these The pathogen can live inside macrophages The pathogen contains mycolic acid in its cell wall Antibodies to the pathogen are protective None of these The pathogen can live inside macrophages The pathogen contains mycolic acid in its cell wall ANSWER DOWNLOAD EXAMIANS APP
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