2. You use tubes to test aerotolerance of bacteria. From your samples you have 3 results: A. Bacteria growing on the surface. B. Bacteria growing throughout the tube, the agar shows cracks. C. Bacteria growing about 5 mm below the surface. Please interpret each bacterial result. (Give the bacteria an oxygen classification, explain what classification means and interpret the cracks in the agar.) 3. Please explain how the use of an Eosin Methylene Blue Agar plate can help determine the type of fermenters that bacteria are. Please explain thoroughly.

2. You use tubes to test aerotolerance of bacteria. From your samples you have 3 results: A. Bacteria growing on the surface. B. Bacteria growing throughout the tube, the agar shows cracks. C. Bacteria growing about 5 mm below the surface. Please interpret each bacterial result. (Give the bacteria an oxygen classification, explain what classification means and interpret the cracks in the agar.) 3. Please explain how the use of an Eosin Methylene Blue Agar plate can help determine the type of fermenters that bacteria are. Please explain thoroughly.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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1. How is UV radiation a good type of control mechanism against microbial growth? Please explain what happens to the microbe and effects this control causes. 2. Suppose you do the Kirby-Bauer test on a hypothetical Staphylococcus species with penicillin and tetracycline. You record diameters of 20mm for tetracycline and 24mm for penicillin. Which antibiotic is most effective against this bacterium and why? Please explain and interpret these results.
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4. You plate 3 different strains of the bacteria family Aspergillis on a MacConkey Agar plate. You notice that 2 have a yellow shade, 1 has a subtle pink color. Please interpret this information. Such as, the type of fermenters these bacteria are and what this says about their metabolism. What does the color change represent? And how is this color change possible? 5. You observe a blood agar plate and see a clear/transparent area where the bacteria has been inoculated. With this information what are some possible outcomes if someone was infected with this type of bacteria? Please explain.
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1. Phenylethyl alcohol (PEA) agar is a selective media. Which of the following organisms should NOT grow well on PEA agar? Choose all that apply. Klebsiella pneumoniae Staphylococcus aureus Escherichia coli Streptococcus pneumoniae Bacillus cereus 2. Phenol red, a pH indicator, is a component of some differential media. Phenol red is a red at neutral and basic pHs and turns yellow at acidic pHs. Which of the following conditions would result in a yellow color in a medium containing lactose and phenol red? A.Growth of an organism that ferments glucose to alcohol. B. Growth of an organism that ferments mannitol but not lactose. C. Growth of an organism that ferments lactose to lactic acid. D. Growth of an organism that is not capable of fermenting any sugars.
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