Module 5 Exam - Bio171 Microbio Questions and Answers with Complete Solutions rated A+

Module 5 Exam - Bio171 Microbio Questions and Answers with Complete Solutions rated A+ The concept of treating all samples, whether known or unknown, as potentially hazardous (or pathogenic) materials is known as _____. - universal precautions List at least 3 observations a researchers would be sure to note while assessing an unknown microbial sample. - size 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? - 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? - 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? - strep would not survive in the presence of peroxides b/c it is unable to breakdown peroxides