Microbiolgy Practice MCQ 0.0 / 5 ? OtherBiomedical ScienceUniversityAll boards Created by: KathleenCreated on: 06-01-14 15:35 What is the name given to hyphae without cross walls? Coenocytic 1 of 16 Which pH do fungi grow best in? 5 2 of 16 What is the name of the asexual spores produced by zygomycota? Sprorangium 3 of 16 What is the definition of epidemic? When a disease occurs in an unusually high number of individuals in a population at the same time 4 of 16 What is the definition of facultative aerobes? Prefer anaerobic, but can respire aerobically 5 of 16 What is the optimum temperature of a psychrophile? (in degrees C) -10-20 6 of 16 What is the optimum temperature of a hyperthermophile? 67-110 7 of 16 What helps DNA stay coiled in microbes that can tolerate high temperatures? reverse DNA-gyrase 8 of 16 What is the name of the enzyme produced by some organisms which neutralises superoxide free radicals (O2-) superoxide dismutase 9 of 16 What is the name of a microbe that requires salt to grow? Halophile 10 of 16 What is the water activity (Aw) of pure water? 1 11 of 16 Which bacterial foodborne disease produces heat stable and heat labile enterotoxins? Bacillus cereus 12 of 16 What chemical do Natural Killer (NK) cells use to punch holes in the infected cell membrane? Perforin 13 of 16 The influenza virus has a single-stranded RNA genome present in how many segments? 8 14 of 16 Which bacterium causes the plague? Yersinia pestis 15 of 16 Which bacterium causes chancroid? Haemophilus ducreyi 16 of 16
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