Microorganisms and Disease Mucus helps in protecting against pathogens by lowering the pH sequestering Iron facilitating the growth of normal flora blocking access and attachment of pathogens to mucosal surfaces lowering the pH sequestering Iron facilitating the growth of normal flora blocking access and attachment of pathogens to mucosal surfaces ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease The influenza vaccine is administered each year because None of these mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines 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 None of these mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines 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 ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following is true regarding anthrax? Anthrax is highly contagious Inhalation Anthrax requires infection with a large number of spores Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis Anthrax is caused by a virus Anthrax is highly contagious Inhalation Anthrax requires infection with a large number of spores Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis Anthrax is caused by a virus ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis? The most serious disease symptoms are the direct result of toxin action Both organisms are gram-positive spore formers Both organisms cause skin and respiratory tract infections Diphtheria toxin and edema toxin are ADP ribosylating toxins The most serious disease symptoms are the direct result of toxin action Both organisms are gram-positive spore formers Both organisms cause skin and respiratory tract infections Diphtheria toxin and edema toxin are ADP ribosylating toxins 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 macrophages M cells B cells ciliated epithelial cells macrophages M cells B cells ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Both Mycobacterium tuberculosis and Streptococcus pneumoniae are acquired by inhalation have polysaccharide capsules stay in the lung and rarely, if ever, enter the bloodstream have cell walls that contain a high content of mycolic acids are acquired by inhalation have polysaccharide capsules stay in the lung and rarely, if ever, enter the bloodstream have cell walls that contain a high content of mycolic acids ANSWER DOWNLOAD EXAMIANS APP
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