Microorganisms and Disease The "A" subunit of diphtheria toxin forms cAMP that leads to fluid accumulation lysis macrophages with the release of cytokines cause ADP ribosylation of a factor involved in protein synthesis binds host cell receptors found on heart cells forms cAMP that leads to fluid accumulation lysis macrophages with the release of cytokines cause ADP ribosylation of a factor involved in protein synthesis binds host cell receptors found on heart cells ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis? Diphtheria toxin and edema toxin are ADP ribosylating toxins Both organisms are gram-positive spore formers The most serious disease symptoms are the direct result of toxin action Both organisms cause skin and respiratory tract infections Diphtheria toxin and edema toxin are ADP ribosylating toxins Both organisms are gram-positive spore formers The most serious disease symptoms are the direct result of toxin action Both organisms cause skin and respiratory tract infections ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Lactoferrin helps to protect against pathogens by sequestering Iron facilitating the growth of normal flora blocking sebum production lowering the pH sequestering Iron facilitating the growth of normal flora blocking sebum production lowering the pH 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 B cells ciliated epithelial cells macrophages M cells B cells ciliated epithelial cells macrophages M cells ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is heat killed virus live attenuated strains of all three immunological types small dosage of wild-type live viruses formalin-inactivated viruses heat killed virus live attenuated strains of all three immunological types small dosage of wild-type live viruses formalin-inactivated viruses 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 survive the acid pH of the stomach 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 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 ANSWER DOWNLOAD EXAMIANS APP
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