... was streaked off of the bottom of a rock that was planted on the soil, using a sterile cotton swab. The environmental unknown was made pure by streaking colonies onto a trypticase soy agar (TSA) plate until all of the colonies were of uniform morphology. The first TSA plate was incubated at room temperature, 25ï‚°C, for 72 hours then refrigerated at 4ï&sbquo ... then sat a room temperature for 24-48 hours, until the growth was then checked. Once the unknown was pure a single large colony was selected and inoculated onto two tripticase soy agar slants with a screw cap tube for stora...

• Word Count: 1658
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

... rods. I though I was going to have a difficult time trying to identify one species until I looked at the TSA plate. One of the bacteria gave off a blue-green pigment into the agar, this is only characteristic to one bacterium on the list of specific bacteria we could have. The other bacteria had a cream growth on the TSA plate but a red colony on ... ...

• Word Count: 765
• Approx Pages: 3
• Grade Level: High School