Microbial World VII
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What are the advantages of using microorganisms to control insect pests? | Biological control agents, such as Bacillus thuringiensis, are specific for insects, they donât pose a threat to humans & other animals. They do not remain in the soil as toxic pollutants that enter and concentrate in the food chain such as DDT.
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| Although penicillin was first discovered in 1928, it wasnât clinically tested until 1940âs. What kinds of issues and problems must have been addressed before making PCN available? | Isolation of Pcn notatum, development a way to extract & purify, ways to produce significant quantities, how is it tolerated, side effects etc. susceptibility, microbial resistance
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| Discuss similarities and differences between syphilis epidemic in the 1940âs and the current AIDS epidemic. | Both sexually transmitted, no vaccine, was no effective drug, Control through behavior. Differences; AIDS transmitted via needles, blood, breast milk, Syphilis treated with antibiotics
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| List three characteristics unique to prokaryotes | Have a single, circular chromosome that is not enclosed by a nuclear envelope, lack true organelles, most have peptidoglycan in their cell walls, binary fission is a common form of reproduction.
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| How did Bassi's and Pasteur's work on silkworm disease help to reinforce the germ theory of disease? | Bassi demonstrated that a microscopic microbe, a fungus, caused disease in silkworms. Pasteur established that another microbe, a protozoan, also caused infections in silkworms. Both of these established a link between microbes and disease.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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