module 5 exam - bio171 microbio with real test.

module 5 exam - bio171 microbio with real test. The concept of treating all samples, whether known or unknown, as potentially hazardous (or pathogenic) materials is known as _____. - correct rsal precautions List at least 3 observations a researchers would be sure to note while assessing an unknown microbial sample. - correct and shape, motility, gram status, color change, chemical reactions While observing an unknown sample of limited amounts, a researcher must determine motility and Gram status using the same sample. What would you determine first and why? - correct answers.Motility because Gram staining requires the sample be fixed which would kill the organism and then you can't observe motility a Facultative anaerobe is a microorganism capable of growth under what conditions? - correct answers.A microorganism capable of growth under aerobic and anaerobic conditions as streptococcus is catalase negative would it thrive or die in the presence of peroxides? Why? - correct would not survive in the presence of peroxides b/c it is unable to breakdown peroxides strep is most often streaked onto: 1.) chocolate agar 2.) EMB agar 3.) Blood agar 4.) Spirit blue agar - correct agar True or false: the Lancefield groups are used to subdivide antigenic groups of alpha-hemolytic Steptococcus - correct The distinctions for Lancefield groupings lie in its - correct answers.Carbohydrate composition of antigens