Portage Microbiology BIOD171 Exam 5 QUESTIONS WITH CORRECT ANSWERS GRADED A+

Portage Microbiology BIOD171 Exam 5 Universal precautions means any and all samples, whether known or unknown, are to be treated as potentially hazardous (or pathogenic) materials. Define the concept of universal precautions. 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 List at least 3 observations a researcher would be sure to note while assessing an unknown microbial sample. You must determine motility before determining the Gram status. Motility requires a wet mount, while Gram staining requires heat fixing the sample. If one were to begin with the Gram stain the heat fixation process would kill the organism, making any observations regarding motility impossible. The correct approach would be to place the liquid culture on a glass slide and determine its motility status. Next, the same liquid culture can be heat fixed and Gram stained. While observing an unknown sample of limited amounts, a researcher must determine the following observations: (1) the presence of any motility and (2) its Gram status using the same sam