In the multiple fermentation tube technique does the absence of gas formation after 24 hours constitute a negative presumptive test for coliform bacteria? Explain!
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Q: Why is mannitol salt agar (MSA) considered both a selective and differential agar for staphylococci?
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Q: Complete the table below regarding different types of fermentation. Microbe Type of fermentation…
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Q: Are the large numbers of microorganisms found in the mouth cause for concern? Explain.
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Q: Why do we test water for coliforms if they are not considered pathogenic?
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Q: What is the Key Gross Morphology Characteristics on different Primary Plating Media for Enterococcus…
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Q: Explain how the type of hemolysis can be used to tell apart two species that would look the same…
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Q: Is the Triple-Sugar Iron Agar (TSIA) a complex or defined medium? Explain based on its composition.…
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Q: Why should culture media after inoculation be incubated at an optimal temperature immediately?
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Q: TRUE or FALSE. The Enterotube II can only be inoculated using a culture from a nutrient broth media.
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Q: Which medium is used for indole test and Coagulase Test?
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Q: Using aseptic techniques, list the general procedure of inoculating a broth from a plate culture.
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A:
Q: What microbe requires serum components to be added to the growth medium?
A: Introduction Microorganisms:- An organism that can be seen only through a microscope, They live in…
Q: 1. Differentiate between defined and undefined culture media. 2. Define alpha, beta, and…
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Q: Why is low microbial population in milk samples a limitation for microscopic count?
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Q: James inoculated a species of bacteria into KIA media and realized that it has a yellow butt and a…
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- Is tripple sugar iron test a efficient test for unknown intestinal bacteria?How would you interpret the following result of the Bile Esculin Test: "Growth of the bacteria is present however no darkening of the agar can be observed after 48 hours." Please explain.Is the Triple-Sugar Iron Agar (TSIA) a complex or defined medium? Explain based on its composition. Is the test tube a A) broth, B) slant, or C) deep agar medium? Why is a “needle” used to inoculate?
- I AM TRYING TO IDENTIFY THIS UNKNOWN. ***IMAGE 1 HAS TWO PICTURE OF CATALASE TEST AND BLOOD AGAR TEST. ***IMAGE 2 HAS THREE TESTS CONDUCTED ON IT, OXIDASE, BACITRACIN AND NOVOBIOCIN. I believe it is one of the following: 1) S. pyo. 2)S. agal . 3)S.pneu. 4)E. faecalis 5)S. aureus 6)S epi. 7)S. sapro. 8)M. luteus Please let me know which one of the above is thge unknown. You have pictures of the unkown on Catalase and Blood Agar and three test conducted on Oxidase, Bacitracin and Novobiocin. Give reasoning as why you think it will be one of the above. Explaing the characteristics and what made you deicide it?six Staphylococcus aureus are inoculated into a cream pie by the hands of a pastry chef. The generation time of S. aureus in cream pie at room temperature is 30 minutes. a) How many S. aureus are in the pie after 4 hours at RT? b) After 24 hours?explain how the use of an Eosin methylene blue agar plate can help determine the type of fermenters that bacteria are. explain throughly.
- Why does a precipitate form on Sierra’s medium when inoculated with a lipolytic organism? Discuss the principle behind this procedure.What is the result of Staphylococcus epidermidis in the TSI agar test?A mixed sample is collected from a salty environment. Staphylococcus aureus has fermentation-positive and Staphylococcus epidermis has fermentation-negative. What is the expected result and appearance of the two bacteria on MSA plate? O Staphylococcus aureus has pink colonies, but Staphylococcus epidermis has yellow colonies. O Staphylococcus aureus has yellow colonies, but Staphylococcus epidermis has pink colonies. O Staphylococcus aureus has clear zones, but Staphylococcus epidermis has pink colonies. O Staphylococcus aureus has brown colonies, but Staphylococcus epidermis has yellow colonies. Staphylococcus aureus has green colonies, but Staphylococcus epldermis has black colonies.