week 1 prelab fall 11

week 1 prelab fall 11 - colony morphology 3 Describe the...

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Week 1 Prelab Questions *Due at the beginning of lab (these will be graded first thing in lab). *Answers should be in your lab composition book *Each answer should be answered in sentence form. *Questions come from the lab exercises and supplement in the lab manual and any other handouts given for the week. W/R Aug 31/Sept. 1 - Exercises 2-2, 2-3, 2-4, 2-12, and pgs. 60 and 17 1. When observing single colonies from the same organism grown at either 25 o C or 37 o C, how would you expect the colonies grown at the two different temperatures to differ? 2. Based on the figures in exercise 2-2, describe two effects that age can have on
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Unformatted text preview: colony morphology. 3. Describe the appearance of a biological indicator vial that has been autoclaved in 1) a properly functioning autoclave and 2) an autoclave that is not sterilizing properly. What causes the color change in the vial when the spores are not killed? 4. What is the purpose of the increased pressure in an autoclave? 5. Do you think that all types of media are autoclavable? Why or why not? 6. How can improper aseptic technique affect the results of an experiment? 7. Why are you required to wear safety eyewear in the lab?...
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  • Fall '08
  • Sig
  • Medical hygiene, Lab Composition Book, properly functioning autoclave, W/R Aug 31/Sept., biological indicator vial

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