Portage Microbiology Biod171 Exam 5 2024 Questions And Answers

Match the following diseases with their respective symptoms: 1. folliculitis 2. scalded-skin syndrome 3. impetigo 4. conjunctivitis 5. ophthalmia neonatorum A. Childhood skin disease near mouth/nose B. Infection of thin, transparent scleral tissue C. Infection occurs at time of birth D. Pus-filled lesions on skin or hair E. Ruptured pustules; treated with penicillin {Ans: 1. D 2. E 3. A 4. B 5. C}Why does the alpha toxin (perfringolysin) produced during an infection of gas gangrene cause cell death? {Ans: The toxin perforates the membrane. It forms pores in the plasma membrane of host cells resulting in uncontrolled ion fluxes and eventually cell lysis and death.}List at least 3 observations a researcher would be sure to note while assessing an unknown microbial sample. {Ans: A lab researcher would be certain to note: Size and shape Any observable motility Gram status (positive or negative) The presence of any chemical reactions Changes in color localized to the organism or the surrounding media Capture (or draw) images of any of the characteristics described above}A facultative anaerobe is a microorganism capable of growth under what conditions? {Ans: A facultative anaerobe is capable of growth under aerobic (with oxygen) and anaerobic