Microorganisms and Disease Pseudomembraneous colitis is precipitated by the use of certain antibiotics All of these caused by a spore-forming bacterium caused by a gram-positive bacterium precipitated by the use of certain antibiotics All of these caused by a spore-forming bacterium caused by a gram-positive bacterium ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Which of these cytokines is also known under the name cachectin? Interleukin 2 Interferon gamma Tumor necrosis factor (TNF) None of these Interleukin 2 Interferon gamma Tumor necrosis factor (TNF) None of these 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 the Rotavirus to be transmitted faster The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings The possession of a segmented RNA genome A limited number of capsule types The ability of the Rotavirus to be transmitted faster The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings The possession of a segmented RNA genome A limited number of capsule types 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 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 survive the acid pH of the stomach ANSWER DOWNLOAD EXAMIANS APP
Microorganisms and Disease Mucus helps in protecting against pathogens by sequestering Iron 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 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 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 cleavage of rRNA that results in disruption of ribosome function ADP ribosylation of guanylate cyclase that stimulates production of cGMP 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 cleavage of rRNA that results in disruption of ribosome function ADP ribosylation of guanylate cyclase that stimulates production of cGMP ANSWER DOWNLOAD EXAMIANS APP
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