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Microbiology Lab

Does having uniformity of colony appearance grantee absence of contamination?

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Reid Wolff
Reid WolffLv2
26 Mar 2019
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Related questions

in Microbiology LAB :

1. How do you inoculate and streak a culture for isolation?

2. Can you identify colony morphology?

3. What is aerotolerance?

4. What is an example of an anaerobe? An aerobe?

5. In a microscope how do you use, handle, and clean them?

6. How does Gram staining act to stain bacteria?

7. What do the following test for? (biochemical reaction, organism)

PLEASE READ THE QUESTIONS CAREFULLY BEFORE ANSWERING (MICROBIOLOGY ) THANK YOU!

  1. Why are different stains used when performing a Gram Staintest
  2. How are Gram stains able to stain different cellstructures
  3. Describe the difference in appearance of a Gram Positive versusa Gram Negative bacterium
  4. Why do some cells divide in 1 plane while others can divide inmore than 1 plane.
  5. What advantage does having 1 or more flagella provide to thebacterium

I need help with this biology lab. The link to the lab is below and the 3 questions that I need help answering follow the link and the hypothesis. Please help. Thanks

http://www.mhhe.com/biosci/genbio/tlw3/virtual_labs/lab29/overview.pdf

How does diesel fuel contamination affect the survival of microalgae?

Hypothesis: Diesel fuel contamination of the sediment will result in lower microalgae biomass indicating a reduction in microalgal survival.

Can you conclude that the microalgae are somehow able to utilize the diesel contaminants, maybe as a nutrient source, and that is why the microalgae biomass numbers increased so significantly in the high contamination microcosms after 28 days of contamination?

Can you conclude that the diesel contamination is toxic to microalgae in the sediment?

Do your results support or reject your hypothesis?

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