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False 2 / 2 ptsQues!on 30The alpha-toxin perfringolysin is associated with which medical condi"on caused byGram-posi"ve anaerobic bacteria?Tetanus Leprosy Botulism Gas gangrene Correct!Correct!The bacterium that produces the alpha toxin perfringolysin is aptly named Clostridium perfringens.2 / 2 ptsQues!on 31True or False. Pneumonic plague is o%en characterized by painfully swollen lymphnodes.Submission Details:Time:57 minutesCurrentScore:111.67 out of120Kept Score:111.67 out of120HomeModulesGrades
nodes.True False Correct!Pneumonic plague targets the respiratory system while bubonic targets the lymph system.5 / 5 ptsQues!on 32Iden"fy the following disease:Gas gangrene Frost bite Anthrax Correct!Correct!Anthrax—the dis"nct black center at the site of infec"on is a hallmark of anthrax infec"on.Tetanus 2 / 2 ptsQues!on 33True or False. Chlamydia trachoma!scan be grown on an agar plate alone.True False Correct!Correct!Chlyamdia is an obligate parasite and requires a host (viable cells) for its growth.2 / 2 ptsQues!on 34True or False. Similar to chickenpox, the blisters that appear with shingles can coverthe en"re body.True False Correct!False. Unlike chickenpox blisters, which can form anywhere, the blisters associated with shingles are localized and limited to small areas.Your Answer:5 / 5 ptsQues!on 35What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct. 26,1977) to be oﬃcially declared eradicated?Small Pox or the Variola VirusSmallpox (Variola virus). Although once a major cause of death in the world, asmallpox vaccine was developed in 1796 by Edward Jenner. Globalvaccina!on efforts have prevented smallpox from appearing in humans sinceOctober 26, 1977, making smallpox the first infec!ous disease ever to beeradicated.Your Answer:5 / 5 ptsQues!on 36Describe the main underlining differences between the Salk and Sabin polio vaccine.The Salk vaccine was developed by Jonas Salk and 90 percent of people who got thevaccine for poliomyeli"s developed protec"ve an"bodies against the virus, theprotec"on increased to 99 percent with repeated injec"ons over "me and it was moreeffec"ve although Albert Sabin developed an oral vaccine or OPV that was giving bymouth and also helped people to develop protec"ve an"bodies against the virusalthough only by 95 percent a%er repeated doses, it was favored by the popula"onbecause it was given by mouth instead of ge&ng the Salk vaccine with injec"on eventhough Salks development was more protec"ng. The Salk vaccine contained an inac!vated form of the virus and was injectedwhile the Sabin vaccine contained a live a"enuated (weakened) form of thevirus and was administered orally. Your Answer:5 / 5 ptsQues!on 37A drug company is trying to develop a new drug that will inhibit viral entry ofInfluenza. Would the drug company target hemagglu"nin proteins or neuraminidaseproteins? Why?