MIC 301 Midterm: lab review 2
28 Sep 2016
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Document Summary
Color: grayish-white, genetic traits determine (soluble pigments that diffuse into the medium) Surface: smooth, rough, granular, glistening, shiny, wrinkled, dry, moist (glossy for capsule) These gram negative rods produce mucoid colonies which have entire edge and umbonate elevation. Some strains produce the red pigment in response to incubation at room temp, but do not do so at 37o c. this is an example of temperature-regulated phenotypic expression. This gram negative rod forms mucoid colonies with elevated, fried-egg (umbonate) appearance; large, smooth with flat edges. Water-soluble green-blue pigment, diffuse into the medium; muller agar yellow-green distinctive fruity odor. Circular, pinhead small colonies which are convex with entire edge. This gram positive coccus produces a bright yellow, non-diffusable pigment. Circular growth pattern, the swarming or spreading (in rings)of the bacteria over the surface is due to the rapid motility of this genus of bacteria (flagella helps motility) What type of organisms is used and why.
